Feral Cats Are An Invasive Species in North America (and elsewhere)
10,000 Birds
JULY 22, 2014
And for rodents and reptiles as well. Free-ranging domestic cats have been introduced globally and have contributed to multiple wildlife extinctions on islands. We estimate that free-ranging domestic cats kill 1.4–3.7 Let me tell you this: They are. billion birds and 6.9–20.7 billion mammals annually.
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