A tiger walks the same worn groove along the edge of its exhibit, like a broken record. A parrot methodically plucks out its ...

We've compiled a list of weird animal behaviors we've amassed from the wild world web!

Like most people, I hate having a cold or the flu. But being sick gets slightly better when a friend drops off some classic movies or goes out for a snack and comes back to throw it up all over me.

To get to the bottom of it, they looked at the fish’s anatomy and physiology and discovered something curious in their gills. A network of vasculature essentially creates a kind of counter-current ...

So what is an animal anyway? In our inaugural episode of Crash Course Zoology, we’ll endeavor to answer just that because as it turns out, it’s complicated! But before we get there we’ll need to ...