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Cats Way Deadlier Than Thought, Report Suggests

More than 12.3 billion mammals and 2.4 billion birds estimated killed by U.S. felines.
02:13 | 01/30/2013

Transcript for Cats Way Deadlier Than Thought, Report Suggests

And finally, we have learned that the number of cats roaming outside in america tonight is exponentially larger than ever before. And not just stray cats, but pets, too. So, some scientists decided to... See More
This transcript has been automatically generated and may not be 100% accurate.
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