Invasive Predator

Cats without owners (feral cats) probably account for about 69% of bird kills and 89% of mammal kills, according to a study by ecologist Scott Loss.

In environments where cats have natural predators, like coyotes, this isn’t a problem. The larger predators keep the feral cat numbers manageable.

Cats wreak havoc on islands though. On many islands, mammalian predators are rare, so birds, small mammals, and small reptiles often evolve without protection against predators.

So when domestic cats arrive on an island, they can easily hunt species to extinction. Domestic cats have completely wiped out 18 island species around the world, and they’re the primary threat to another 36 critically endangered species.

Sourced from an article by @gizmodo