Why does the dominant white gene cause deafness in some cats?

The dominant white gene in cats is associated with an increased risk of deafness. This is because the gene affects the development of the cells in the inner ear that are responsible for hearing.

All-white semi-feral cat. Image in public domain.

The dominant white gene can cause the cells in the inner ear to fail to develop normally, leading to a condition called congenital sensorineural deafness. This type of deafness is caused by damage to the hair cells in the inner ear, which are responsible for converting sound waves into electrical signals that are sent to the brain.

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Cats that have one or two copies of the dominant white gene are at an increased risk of developing congenital deafness. This is particularly common in cats with white fur and blue eyes, as the gene that causes blue eyes is closely linked to the dominant white gene.

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It is important to note that not all cats with the dominant white gene will be deaf, and not all deaf cats have the dominant white gene. Deafness can also be caused by other genetic mutations, environmental factors, or as a result of age-related hearing loss.

Why do cats get feline leukemia FeLV?

Feline leukemia (FeLV) is a viral infection that affects cats. The virus responsible for FeLV is called the feline leukemia virus. Cats can become infected with FeLV through close contact with an infected cat, such as grooming, sharing food or water dishes, or through bite wounds.

FeLV cat. Image in public domain.

FeLV attacks the cat's immune system and can lead to various health problems, including anemia, cancers, and other infections. FeLV is most commonly found in cats that spend time outdoors, cats that live in multi-cat households, and kittens born to infected mothers.

Chart by MikeB.

Not all cats that come into contact with FeLV will become infected. The virus is relatively fragile and can be easily destroyed by most household disinfectants. It is important to vaccinate cats against FeLV and to test cats for the virus before introducing them to a household with other cats. Additionally, keeping cats indoors and limiting their exposure to potentially infected cats can reduce the risk of infection.

Why did the saber-toothed tiger become extinct?

The saber-toothed tiger, also known as the Smilodon, went extinct about 10,000 years ago, at the end of the Pleistocene epoch. There is no single definitive answer to why this species went extinct, but researchers have proposed several theories.

Model of a saber-toothed tiger. Image: MikeB based on one in the public domain.

One theory suggests that the extinction of the saber-toothed tiger was due to changes in climate and vegetation. The end of the Pleistocene epoch saw a shift towards a warmer, drier climate, which may have reduced the availability of the large prey species that the saber-toothed tiger relied on. As the saber-toothed tiger's prey populations declined, the species may have been unable to adapt and survive.

Another theory is that the saber-toothed tiger's extinction was due to competition with other predators, such as humans and other big cats like lions and tigers. Humans may have hunted the saber-toothed tiger, while other predators may have outcompeted them for prey resources.

Lastly, some researchers believe that disease or genetic factors may have played a role in the extinction of the saber-toothed tiger. However, further research is needed to understand the exact cause or combination of causes that led to the extinction of this iconic predator.

Why are there so many stray cats in Israel?

Feeding stray cats divides Israelis. Image in the public domain.

There are several reasons why there are so many stray cats in Israel.

Firstly, cats have a long history in Israel and the Middle East, and have been present in the region for thousands of years. In many cultures in the region, cats are considered to be good luck and are sometimes even kept as pets in homes or businesses to ward off evil spirits or pests.

Secondly, the warm climate in Israel allows cats to reproduce year-round, leading to a high population growth rate. Additionally, some owners may abandon their cats, which can contribute to the number of strays on the streets.

Thirdly, there is a cultural reluctance to spay or neuter cats, as some people believe it is unnatural or cruel. However, this has led to an overpopulation of cats, which can result in disease and other health problems.

Lastly, many Israelis feed the stray cats out of kindness, which can contribute to their survival on the streets. However, this also perpetuates the problem of overpopulation and can lead to issues with waste and sanitation.

Overall, a combination of cultural, environmental, and social factors has contributed to the large population of stray cats in Israel.

Why are there so many cats on Cyprus?

Community cats of Cyprus. Some of the estimated 1.5m on the island where there are 1.2m humans. Picture in the public domain.

There are several reasons why there are so many cats on Cyprus:

1. Historical background: Cats have been living on the island of Cyprus for thousands of years, dating back to ancient times. They were brought over by early settlers to help control rodent populations.
2. Climate: The warm Mediterranean climate of Cyprus provides an ideal environment for cats to thrive. They are able to survive and reproduce year-round without the threat of harsh winters.
3. Cultural significance: Cats hold a special place in Cypriot culture and are often viewed as good luck symbols. Many locals believe that feeding and caring for cats brings blessings and positive energy into their homes.
4. Lack of spaying/neutering: Many cats on Cyprus are not spayed or neutered, which leads to an overpopulation of cats. Without proper population control, the cat population can quickly grow out of control.
5. Tourism: The island's popularity as a tourist destination has also contributed to the cat population. Tourists often feed and interact with stray cats, leading to their continued presence in urban areas.
6. Overall, the combination of historical factors, climate, cultural significance, lack of spaying/neutering, and tourism has resulted in a high population of cats on Cyprus.

Community cat of Cyprus. Image by Dimitris Vetsikas from Pixabay