1. Domestic cats have contributed to multiple wildlife extinctions on various islands around the world.
2. The magnitude of cat-related deaths that happen to wildlife each year in the United States is still unclear.
3. It’s estimated that they kill somewhere between 1.4–3.7 billion birds…
5. Free-range cats contribute to far more deaths than previously thought.
6. It’s likely that cats are the greatest man-made or human-related source of mortality for birds and mammals in the U.S.
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