You may know them as Alvin’s little friends who love to sing in the movie Alvin and the Chipmunks, but in reality, chipmunks really love to chirp and use their harmony to communicate with each other.

When we think about wildlife, we usually notice a bird’s bright colours, a predator’s speed, or a mammal’s size. But there’s one feature we often overlook– teeth. For many animals, teeth aren’t just ...