According to a new study the cute outdoor cats kill between 1.4 billion and 3.7 billion birds a year, and are the leading cause of death among both birds and mammals in the United States!

Researchers estimate that one pet cat kills one to 34 birds a year, while a feral cat kills 23 to 46 birds annually.

In a press release, Dr. George Fenwick, president of the American Bird Conservancy, said:

“A wake-up call for cat owners and communities to get serious about this problem before even more ecological damage occurs.”

via telegraph