The video is about the capybara described as one of the world's friendliest animals. It is semi-aquatic which is probably one reason why it can't be a great pet despite the potential for being a much better pet than a cat! We are all familiar with the domestic cat as one of the world's most popular pets with the dog; but both cats and dogs are predators. This a great drawback to their success as pets.
There are constant aggravations as a consequence of the cats desire to chase and kill prey. The predatory instincts are a barrier to the cat's friendliness. The weapons! Claws and teeth which scare a lot of people.
The capybara is said in the video to be the world's friendliest animal because they are not predators but herbivores. They don't make enemies. Other animals don't run from them. It's a point worth making.
We have to play with our cat to entertain them especially if they are indoor cats. But play is centred around hunting. All cat play is a variation on hunting. And if there is a problem between cat and owner it can often be put down to undesirable cat behavior. This is an oblique reference to being bitten or scratched. And that comes from their predatory instincts often in self-defence when mishandled for instance by a human.