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Feral Cats Are An Invasive Species in North America (and elsewhere)

10,000 Birds

He also had tigers, cougars, and some other animals. This is approximated by the size of the animal, but really, this has to be adjusted for depending on modality of killing. We estimate that free-ranging domestic cats kill 1.4–3.7 Un-owned cats, as opposed to owned pets, cause the majority of this mortality.