Your friendly feline is the top threat to wildlife in the U.S.

There are serial killers among us: They eat our food, poop in our basements, and claw our new sofas into tatters. We have met the enemy, and they are our cats. A report published in Nature asserts that cats might kill as many as 20 billion mammals — and possibly more than three million birds —  every year. Cats' to-kill list is led by robins, mice, shrews, voles, squirrels and rabbits. One researcher said, "Our study suggests that they are the top threat to U.S. wildlife." Luckily, this particular threat has an easy solution: Animal experts suggest a simple bell on a collar. [Source]

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