They like being with other pig friends, are OK living with cats, but commonly injured by dogs. (okcpetsmagazine.com)
The best entertainment for your guinea pig is a friend as they are extremely social, herd animals who thrive in the company of other pigs. (petfinder.com)
Single pigs don't tend to do as well and develop more behavioral problems than those who live with other pigs. (bestfriends.org)