Monday 9 May 2022

Royal Canin dental dry cat food is too smelly for humans

I have a problem with Royal Canin dental dry cat food. I have an open plan kitchen and therefore it merges into the living room. And if cat food is too smelly it tends to permeate my living space. And I found quite positively that Royal Canin dental dry cat food is too smelly for my liking. 

Too smelly as far as I am concerned. And smellier than Hill's which is a comparable product.

It might not be too smelly for my cat. In fact, I am sure that it isn't but it is too smelly for me because I can smell it in the room which is not right. And, also, it is smellier than Hill's dental, which is also a large pellet dry cat food.

I just wonder whether the manufacturers have ever taken into account how cat owners react to the smell of their products. They must make is smelly to attract cats who depend a lot on the smell of food to judge if it is attractive to them. But what about the humans?

Normally, I wouldn't mention the smell of dry cat food in a bowl waiting to be eaten but because Royal Canin smells so strongly it is noticeable. And it shouldn't be noticeable. Of course, dry cat food is in a food bowl for a long time as it does not go off like wet. This means the smell is more likely to have an impact on the living area from a human standpoint.

During the day when my cat generally eats wet cat food, I sometimes place a small plate over the dry cat food bowl to stop the smell permeating my living space. I'm not sure what more to say. I just think that the manufacturer has got this wrong.

Hill's create a dry cat food for dental cleaning which is perfectly acceptable and as effective as Royal Canin but it doesn't smell like the Royal Canin. It is acceptable.

This is just a short note. I have nothing more to say really but I felt that I needed to get it off my chest. Does anyone else have the same problem with this cat food?

Cat coats: solid-and-white - bicolor cats

black and white cat
Cat Coats Solid and White - Bicolor - photo copyright fofurasfelinas


This is another posting on cat coats. This time I discuss the impact of the white spotting gene on "solid" colored cats other than Tuxedo cats, which I have already discussed on this page. Tuxedo cats are very common and specific in their coat pattern so I've dealt with them separately. Both are bicolor cats meaning a cat coat of two colours, white and another solid colour.

Bicolour development - white spotting gene. Image: Sarah Hartwell.

The particular effect that the white spotting gene has on any one cat dictates the spread of white fur on the cat (or put it another way it restricts the spread of color). The cat fancy has given names to the patterns caused by this gene, which by the way is also called the piebald gene. It is considered a "semi-dominant" gene.

Bicolour faces white spotting gene. Image in public domain.

White spotted cats are one of the most common cats. The white spotting gene (represented by the letter "S" in the science of genetics) can change the appearance of any colored cat including tabby cats or tortoiseshell cats or a combination of the two (torbie). [See cat coats tortie and white]. When it affects a tortoiseshell cat, the cat is called a calico cat in the States.

Bicolours. The chart is by Sarah Hartwell of messybeast. Many thanks.

RELATED PAGE: White spotting gene charts.

A fine example of a cat with a solid and white coat is the Turkish Van (high grade spotting - see below). This has, of course, the "Van" pattern. Van is a town in the South east of Turkey, where the Turkish Van originally came from (including adjacent regions).

Another example of a well-known cat breed with a "solid and white coat" is the Japanese Bobtail. The Japanese Bobtail has a Bicolor pattern in both "solid and white" and calico (which is tortoiseshell and white mentioned above).

bicolor cat
Bicolor cat photo by tanakawho (this photographer is well known - see more of his work here plus the work of 2 other fine photographers). Picture reproduced here under a creative commons license.

I discuss, in brief, the workings of the piebald gene on the Tuxedo cat page as well as here. The effects of the piebald gene can be seen to varying degrees. The amount of white dictates whether the pattern is a grade 9 (almost total white with the colored fur limited to a few spots). This is called high grade spotting.

At the other end of the spectrum at grade 1 there is a very small amount of white. This is called low grade spotting. When the cat is low grade the genotype (genetic makeup in relation to the cat's coat) is normally heterozygous represented by the letters "Ss". Conversely when the coat is high grade (lots of white) a spotted cat is generally homozygous "SS".

Black and white bicolor Scottish Fold kitten from Russia (Siberia). Photo (excellent):  Анатолий Кузнецов.

The presence of the piebald gene results in white fur by causing special embryonic cells to behave in a defective manner. These cells are called "Melanoblasts" and they become the cells of the cats body that produce the granules of pigmentation that are embedded in the individual hairs. During the embryonic stage these cells migrate from the spine area. They fail to migrate properly and fully causing parts of the body to be without color. The wide variability of the effect of this gene is due, at least in part, to the presence of other unidentified genes called "polygenes".

The great Dr. Desmond Morris discusses bi-colour cats in his book Cat World. He tells us that such patterns are most common in non-pedigree cats. But of course, you will see this coat type in pedigree cats as well. It depends on the breed standard is to whether they are allowed or not. In the early days of the cat fancy the bi-colour cat was less likely to be accepted because they felt that they made a pure-bred animal look like a moggy.

This was prejudice against the coat but it was more likely to be accepted if there was some sort of distinguishing factors about the bicolour coat such as an attractive symmetry or the distribution of the colour was interesting.

In the early days of the cat fancy the black-and-white coat was referred to as a 'magpie cat'. And sometimes the bicolour cat is called a parti-colored cat. You will see "parti-colored" spelled in different ways. Apparently bicolour cats only attained championship status within the show cat fraternity in 1966.

You will see bicolour cats in longhaired and shorthaired cats and in many cat breeds such as the American Shorthair, British Shorthair, Devon Rex, Cornish Rex, Japanese bobtail, Maine Coon, Manx and Persians. These are just examples. There are others.

Here are some photographs of the solid and white coat pattern:

Cream and white - photo:
copyright Helmi Flick


Cat Coats Solid and White - Turkish Van - Photograph copyright Lazy_Lightning


Cat Coats Solid and White - Black and White Van pattern with a lot of white (grade 8 perhaps) - photograph copyright Helmi Flick.


Black with white (more than a Tuxedo). Photograph copyright Helmi Flick.



Cat Coats Solid and White - This is another black-and-white cat (hairless cat). This demonstrates how the white spotting gene affects the skin color as well. Perhaps more accurately it is the almost invisible downy hair strands near the skin which are pigmented.


Perhaps a more accurate description for this cat, a Sphynx Cat (or Sphynx-like cat) would be Black and Pink! Photograph copyright Helmi Flick.

Cat Coats Solid and White - Sources:
  • Beth Hicks
  • Messybeast - Sarah Hartwell

From Cat Coats Solid and White to Cat Facts

Cat coats tabby - all about, nothing left out

tabby cat
Cat Coats Tabby - Mackerel Tabby cat Chihiro - photo copyright fofurasfelinas reproduced under a creative commons license

Introduction - history


The tabby markings/color
is probably the most common, in either domestic cats or wild cats (e.g. Scottish wildcat). When cats breed randomly over a long period of time, apparently the coat color and pattern tend towards brown mackerel tabbies with green eyes (the most common "phenotype" - meaning the observed expression of the genetic make-up).

RELATED: Why are tabby cats so common?

This indicates a genetic predisposition towards what is probably the most efficient coat color/pattern in respect of the cat's survival. There are three tabby patterns: the classic blotched pattern, the striped or mackerel pattern, and the spotted pattern. The Bengal cat for example can have a spotted tabby or blotched coat, while the Egyptian Mau has a naturally occurring spotted tabby coat - the only naturally occurring spotted domestic cat it is said. 

The agouti ticked coat (the Abyssinian cat has the classic ticked coat) is a special kind of tabby coat. 

The Abyssinian has a special tabby coat. There are few markings unlike the usual tabby coats that can be spotted or blotched. This picture shows the banded hair strands. This photo is published under a Wikimedia Commons license. Author: Martin Bahmann 


As mentioned, you can see the tabby coat in wild cats such as the African wildcat and American Bobcat for example. However, I don't recall seeing a wild cat with what the cat fancy calls the "blotched" tabby coat. All wildcats appear to have spots and/or stripes or no tabby pattern. The blotched tabby appears to be a creation of the cat fancy or at least it has been "developed" and enhanced by the cat fancy (cat breeders). 

Tabby cat from Ancient Egypt (not far from Saudi Arabia) from 1500 CE. Picture in public domain.
Tabby cat from Ancient Egypt (not far from Saudi Arabia) from 1500 CE. Picture in public domain.

Dr. Desmond Morris, the great zoologist and writer, tells us that it is believed that blotched tabbies arose first in Britain in the Elizabethan era. As you can see, they arrived very late during the evolution of the domestic cat. For the first 2,000 years or so or more all tabby cats were spotted/striped (broken stripes) tabbies and all domestic cats were spotted tabbies. And therefore, all domestic cat during the era of the ancient Egyptians were spotted/striped tabbies.

Dr. Morris says that the blotched tabby became a winner. In other words, a favourite and he is not sure why they did so well. Perhaps they were more healthy or more fertile than the other forms of tabby cat or perhaps they had an unusual level of aggressiveness or assertiveness. Perhaps people just like them and informally bread them?


Development of the blotched tabby domestic cat. My thanks to the scientists of the study:  The palaeogenetics of cat dispersal in the ancient world.


Today, the blotched tabby is the most common form of tabby coat and the striped tabby has gone into somewhat of a decline. Of course, nowadays the tabby coat is just one of many types of coat that have evolved during domestic cat evolution. However, Dr. Morris reminds us that genetically and in reality all domestic cats are tabbies. If they don't appear to be tabbies it is because the tabby pattern is masked by the other non-tabby colours.

African wildcat compared with domestic cat. Image: MikeB from images in the public domain.

Of course, the tabby pattern comes from the original domesticated wildcats. The North African wildcat has a week tabby pattern. And if we want to visualise the early domestic cats all you have to do is look at today's African wildcats. From paintings created in ancient Egypt we see that the Egyptian cats had light or broken stripes. When they were exported over thousands of years to other parts of the world including Europe, the cats began to hybridise with their European counterparts and the result was a full-tabby coat.

Tests have shown that when the week-tabby European and African wild cats were experimentally crossed the hybrid kittens developed coat patterns which were much closer to the full-tabby pattern of modern domestic cats according to Dr. Desmond Morris. I have quoted him verbatim.

Ginger blotched tabby
Ginger blotched tabby. Photo: Pixabay.

All tabby cats have the classic M marking on the forehead in varies styles and disguises.

An example of a purebred and pedigree tabby cat would be the American Shorthair.  This breed looks particularly stunning in silver tabby. Another example of a beautiful purebred Maine Coon tabby can be seen by clicking on this link. The tabby pattern is often seen in Maine Coon cats. The cat associations allow a wide range of Maine Coon cat coat types (you'll see a great tabby MC on this link). There are some classic tabby patterns on wild cats. A good example is the tabby coat of the wildcats. These cats look very much like domestic cats as they are the wild ancestor of today's domestic cat.

Origin of Name

It is thought that the word, "tabby" originates in the appearance of silk sold in Baghdad (the Attabiyah region). This region must have been known for selling silks that had a striped appearance (watered - waved - silk) as incorporated into the name. Attabiyah is reference to the Latin attabi, and later the French tabis, which means, as I understand it, watered silk. As the striped and marbled tabby cats have the same general appearance, the word "tabby" was used to describe the coat.
cat coats tabby - tabby cat
Cat Coats Tabby - Mackerel Tabby cat Chihiro - photo copyright fofurasfelinas reproduced under a creative commons Attribution-NonCommercial-NoDerivs License

The Genes

As mentioned, the wild cats have tabby coloration and patterns and the domestic cat is descended from the wild cat (see a comparison between the Scottish wildcat and domestic tabby). The pattern has 2 elements to it. (1) There will be a group of hairs in which the individual hairs have bands of color running horizontally up the hair strand. One band will be yellow and the next black. These hairs form the background color upon which the pattern is overlayed by the second group of hairs. The commonly spoken of "Agouti" gene (A) creates this banding pattern on the hair shafts. The banding on the hair shaft is due it is thought to a reduction in the production of the pigmentation granules or the production of a different and yellow pigment. This results in fewer granules that are spread more thinly throughout the hair follicle to give the beige/yellow looking color.

The pigment producing the black band in the hair shaft is called eumelanin and the yellow pigment is called phaeomelanin.

Tabby Hair Strand. Image: MikeB.


If the band near the surface is beige you get the light brown broken effect and if the black banding is near the top the black is broken up by the beige banding lower down. (2) The other group of hairs will be black because the yellow banding referred to above will have been reduced (repressed) to the base of each hair or removed entirely. This group is seen as the spots or stripes or blotchy patches of black or brown that forms the patterns seen in the pictures. This effect is a result of the presence of the Tabby gene (Mc/mc), which is present in all cats and so are the markings but often sufficiently suppressed as to be invisible.

I know a small classic tabby that has also solid black hair in swathes, and also black hair with one band of beige near the surface which creates a speckled look on black. All these combinations are mixed together in various proportions and in varying sized clumps to produce the tabby pattern. The pattern that we readily see is due to the alternation of solid color (black fur) with the banded fur to create a pattern as mentioned above. It is the Primary Tabby gene (Mc) that dictates how the pattern will shape up for the individual cat.

tabby cat
Cat coats tabby - Tabby cat. This is a great photograph of a tabby cat. I just had to put it on this page. It is reproduced under a creative commons license.

There are several varieties of tabby markings and of course as mentioned an almost inexhaustible spectrum of colors, contrasts and pattern variations particularly in purebred cats where the appearance of the cat is of paramount importance.

Update 12th January 2011: See an article on red tabby cats and a nice picture of a Maltese red tabby.

Torbie

The torbie is a mix of tabby and tortoiseshell. Here is an example:

Gemma: Torbie Siberian Cat. Photo copyright Helmi Flick

Read about torbies by clicking on the link below:

  
Tabby Cat Picture

There are a lot of tabby cat pictures on this page! People search for "tabby cat picture" so here is one of the best of a rescue cat by Giane Portal on Brazil. This is a classic blotched grey tabby cat - perfect example. You can see an orange tabby cat picture or two on this page.

Dominique
Dominique - photo copyright Giane Portal

Mackerel Tabby

silver mackerel tabby cat
Cat Coats Tabby - Silver mackerel tabby cat - photo copyright Helmi Flick

red-and-cream-mackerel-tabby-cats
Cat Coats Tabby - Cream and red mackerel tabby cats - photo copyright Helmi Flick

red-mackerel-tabby-cat
Cat Coats Tabby - Red mackerel tabby cat - photo copyright Helmi Flick

brown-mackerel-tabby-cat
Cat Coats Tabby - Brown mackerel tabby cat - photo copyright Helmi Flick

blue-and-brown-mackerel-tabby-cats
Cat Coats Tabby - Blue and brown mackerel tabby cats - American curl cats - photo copyright Helmi Flick

The type we probably are most familiar with is the mackerel, stripped tabby. This is considered the wild type of tabby pattern. The genotype (the genes producing the black tabby coat) is A (agouti) + B (black) + D (dense coloration) + Mc (tabby gene).

Breeders like high contrast striping that is nice and evenly spaced and the stripe should be continuous. The Toyger has this. The Toyger also has a beautiful base or ground color that is incredibly warm (orange almost). The base color comes from the color of the agouti band on the individual hair strand. The warming up of the ground color is due to selective breeding in modifier genes (rufus modifiers). Click on the link to go to a pictures of cats.org videos of cats many of which are fundamentally tabby cats (YouTube, channel is broadsurf the YouTube name of Michael at Picture of Cats).

Classic Tabby

blue classic tabby cat
Blue classic tabby - photo copyright Helmi Flick

red classic tabby cat
Red classic tabby - Maine Coon - photo copyright Helmi Flick

cream classic tabby cat
Cream classic tabby - photo copyright Helmi Flick

brown classic tabby cat
Brown classic tabby - photo copyright Helmi Flick

silver classic tabby cat
Silver classic tabby cat - This as you might have guessed is an American Shorthair cat. I have a post dedicated to the American Shorthair tabby cat. The silver is due to the Inhibitor gene I, which inhibits the production the yellow Agouti banding leaving the black to contrast more starkly with a gray/silver background.

The genotype (the genes producing the black tabby coat) of the classic blotched tabby cat is A (agouti) + B (black) + D (dense coloration) + mcmc (tabby gene). The difference to the mackerel tabby is the existence of the mc allele (allele = one of a pair of genes).

Spotted Tabby

brown spotted tabby cat
Brown spotted Tabby - Bengal cat - - photo copyright Helmi Flick. Bengal cats are known for a very high contrast marbled pattern, see some superb examples by clicking on this link. Spots are another form of tabby pattern. You can see this beautifully expressed in the Bengal cat and/or, for example, the Ocicat.

blue spotted tabby cat
Blue spotted tabby cat - - photo copyright Helmi Flick
cream spotted tabby cat
Cream spotted tabby - Exotic Shorthair cat - photo copyright Helmi Flick


silver spotted tabby cat
Silver spotted tabby - an example of the presence of the Inhibitor gene I - a Bengal cat - photo copyright Helmi Flick.

Research is still being carried out on the genetics behind the spotted tabby coat. It may be due to a modifier gene on the mackerel tabby. The striping of the mackerel tabby can break up and if that is captured and bred into the cat you'll get spots. In the Ocicat it seems that the effect is due to a dominant modifier of the blotched classic tabby pattern. Click on the link to see a video of the Ocicat on YouTube (this video is part of Pictures of Cats.org)


Ticked Tabby - Abyssinian Tabby


silver-ticked-tabby
Cat Coats Tabby - Silver ticked tabby - Abyssinian cat - photo copyright Helmi Flick

red-ticked-tabby
Cat Coats Tabby - Red ticked tabby - photo copyright Helmi Flick

brown-ticked-tabby
Cat Coats Tabby - Brown ticked tabby - photo copyright Helmi Flick.

Robinson's genetics says that the gene that produces the Abyssinian ticked coat is not the same gene as the tabby gene producing the classic and mackerel. They call it the "ticked gene". The authors say that the Abyssinian cat's appearance is a mutation of the normal tabby. The tabby pattern occurs on the head, legs and tail and very faintly elsewhere on the body. Breeders like to reduce the pattern further by careful breeding. The most frequently seen Aby color is the ruddy (red) - middle picture above - called the "usual". Breeders breed in a warmer color.

The full set of genes producing the well known Abyssinian coat are: AA (Agouti) - B (black) - D (dense coloration) - TaTa (ticked gene).

The tabby cat locus maps to the feline chromosome B1. It seems possible that the tabby gene has a homologue (common evolutionary origin) on human chromosome 8 or 4. (src: http://www.pubmedcentral.nih.gov/)

Interesting

This is an interesting bit of information about the tabby cat as camouflage, which comes from Desmond Morris's book "Catwatching". It had been proposed by a nineteenth century naturalist (I presume) that when a tabby cat is curled up she/he looks a bit like a "coiled snake". Once again this is a form of mimicry, one of a number of examples of the cats mimicry of the snake as an act defensive. Read about a cat hiss as another example.

A Torbie is a mixture of tabby and tortoiseshell. An example of tortoiseshell is the black tortoiseshell or just plain old tortoiseshell cats (this page has great pictures). Some people think the tabby cat is a cat breed.


See a Tabby Persian cat picture by Helmi Flick

Cat coats tabby - Photographs not captioned are copyright Helmi Flick and as follows:
  • Top is a classic tabby
  • 2nd is the mackerel tabby
Cat coats tabby - Sources:
  • Messybeast
  • Cat Fanciers
  • Beth Hicks
  • Robinson's Genetics
From Cat Coat Tabby to Cat Facts

Sunday 8 May 2022

Flying pets into Australia is a nightmare!

NEWS AND COMMENT: There is a Facebook page providing advice on how to import pets into Australia by air (Petsflyingtoaustralia | Facebook). It is called Pets flying to Australia. The reason why there is an advice page on Facebook on this matter is because it is very complicated and troublesome. And, in my opinion, it is complicated and troublesome because the Australian authorities have a great fear of the importation of wild animals which may escape their owner's home and prey on native wildlife species. 

My distinct impression is that the Australian authorities are very risk averse when it comes to any importation of any non-native species, domestic or wild. The domestic cat is non-native to Australia.

Kucing and Amal
Kucing and Amal. Photo: Brooke and John.

There is a story currently on the Internet which highlights this attitude. A couple of Australians, Brooke Jones and John Waskiw, had the temerity to apply to fly into Australia from Malaysia a couple of domestic, street cats. 

RELATED: Why are there no native cats in Australia?

The cats' names are Kucing and Amal. The importation by air process cost them AU$25,000 (US$17,692). And apparently their story is not unusual. Attempting to bring pets home means going through a lot of hoops and hurdles and includes paying massive bills, uncertainty, headaches and long waiting times. Clearly the authorities want to put people off importing domestic cats into Australia. That must be the underlying purpose.

John must've been working in Malaysia because it is said that he found Amal on the street near his workplace as the only survivor of a litter of kittens, the mother which is Kucing. When he was scheduled to return to Australia, he found that he couldn't leave the cats behind in Malaysia.

He fell in love with the cats. He said that he had no option but to bring them with him. He said that once you take them off the streets and look after them you have an obligation to care for them for the remainder of their lives. There is an argument which supports that. If you rescue a cat, it is said that you become the owner of that cat.

RELATED: Is it legal to own a caracal in Australia?

In another story, Cielle spent AU$12,000 to get to Siamese-cross cats to Brisbane, Australia on a flight out of Los Angeles. She described the experience is very stressful. She said that when they saw her 84-year-old mother they stopped screaming! I can sense the stress that that entailed.

Source: The Sydney Morning Herald.

Saturday 7 May 2022

Confident cat is a happier cat

A confident cat is a happy cat. Why? Why is it good to live with a confident cat? Before I tell you why I think it is a good thing, I would like to say that I am drawn to cats that lack confidence. I see their vulnerability and I want to make them stronger. That sentence gives a clue as to what I am about to say.

Confident looking Bengal cat enjoying himself
Confident looking Bengal cat enjoying himself. Picture: Pinterest.


You can apply the same rules to people and cats when it comes to discussing confidence. A confident person is less likely to be anxious about the sort of things that are around him and which affect him/her. As anxiety makes you unhappy, less of it makes you happier or more content. Also, a confident animal is more able to deal with what is thrown at him or her. This is good.

The same rules apply to cats. A confident cat is a happy cat. They are able to express their views and natural instincts and behavior. This is shown in positive vocalizations in asking for food, for example. A cat that asks for food in a positive way is a cat that feels at home and that has become a part of the family. 

Vocalizations are good. They might irritate a bit from time to time but they are a sign of a contented cat that is part of the family. It means the cat feels like an equal, which is what we strive for as concerned cat caretakers.

When you select a kitten from a breeder, pick out the confident cat that comes to you. On second thoughts, why not try this: pick out the timid cat who is frightened, adopt them and take them home. Love them and fill them with confidence to allow them to be happier. This is my preferred choice as an adopter.

Of course, it perhaps goes without saying that a cat's character is dictated by their genetic inheritance and the environment in which they are raised and live. You can't change the former but you can improve the latter and therefore improve their confidence.

The point is that some timid cats can be drawn out and made more confident but they will always remain somewhat timid. There is, though, a great charm in a timid cat and there are advantages. One springs to mind immediately: they are less likely to roam if allowed outside and get into trouble and as a consequence be injured.

It is the foolhardy, young and confident male cats who are more likely to be hit by a car on the road. Confidence can lead to unhappiness sometimes.

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