Add Yahoo as a preferred source to see more of our stories on Google. 27. What's a cow's best subject in school? Cow-culus. 28. What do you get when you cross an angry sheep and a moody cow? A ...

Add Yahoo as a preferred source to see more of our stories on Google. You know, we've never thought about the first time a cow moos. It just seemed like something they innately knew how to do. But man ...

You know, we've never thought about the first time a cow moos. It just seemed like something they innately knew how to do. But man oh man were we wrong! Cows have to "find" their moo — it's a whole ...