The first time you see a rat boggling its eyes, it can be a startling sight. Their eyeballs visibly vibrate in their sockets. It’s not surprising that many novice pet rat owners assume something is ...

Rats are thin-tailed, medium-sized rodents, and you can find them all over the world. “True rats” belong to the genus Rattus, and around 60 species have been recognized so far, including the house rat ...

Add Yahoo as a preferred source to see more of our stories on Google. Rats have a unique anatomy that means that their jaw muscles run behind their eyeballs. Rats have to grind their incisors to stop ...