Most cats purr in the same low range, but the reason yours sounds higher isn't what you think. Here's what actually sets a calico's purr apart from a tabby's.

Purring is something that pretty much every single cat does, but interestingly we know less about why cats make this noise ...

Add Yahoo as a preferred source to see more of our stories on Google. Cats are charming, mysterious, and sometimes puzzling companions. One moment they're calm, and the next they're up to something ...