Killer cats, our mammal invaders
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Last updated 8/5/2021 at 9:46am
There are several non-native, invasive mammal species that wreak havoc on the world around us.
First example? Our pet cats, that turn into cold-blooded killing machines when they get outside. The Smithsonian Conservation Biology Institute estimates that domestic cats in the United States kill 2.4 billion birds and 12.3 billion mammals a year. That is not a misprint – “b” as in billions.
These are big numbers because we have big numbers of cats. They are one of the single most significant human-linked threats to wildlife that we have.
The mammals they kill include mice and rats, but...