Hello, about 2 months ago I got my guinea pig, chubs, he is perfect. I read online that they do better in pairs/groups so I decided to get him a friend. I kept them separated and he was doing well at first but today he attacked the new comer and sent him flying cross the room. The new one is just a baby and is not used to being alone all the time. Do you think that he should have a guinea pig with him in his cage? I don't want him to become depressed because he has never been alone before.