WHY is it dangerous for cats and dogs to go extinct?

Many cats and dogs, especially ornamental breeds, are almost incapable of making their own food in the wild. Even urban stray dogs and cats live mostly off people – intentional feeding and food scraps.

Furthermore, even completely feral dogs tend to lose competition to wild dogs like wolves, coyotes, etc. Living in the same territory as them, without human support, willing or unwilling, they quickly become extinct. However, in the absence of wild competitors, some dogs and cats are quite capable of mastering an independent life.

The most famous example is the Australian dingo, the feral descendant of domestic dogs, now the largest predator in the Australian fauna. In Australia, as well as in a number of other places, there are stable populations of feral domestic cats.

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