Add Yahoo as a preferred source to see more of our stories on Google. If you haven't met this internet-famous baby pygmy hippo named Mars yet, you're in for a treat. Mars is just over two months old, ...

If you haven't met this internet-famous baby pygmy hippo named Mars yet, you're in for a treat. Mars is just over two months old, and everybody adores him. He's feisty, independent, and doesn't like ...