Guinea pigs have the opportunity to greet trick-or-treaters at the door in costume, thanks to these Halloween looks Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013 ...

First things first: the guinea pig is not a pig and it’s not from Guinea. Now that we’ve cleared that up, let’s talk about what these charming rodents, also called cavies, actually are. Their ...