I have a single guinea pig named Ollie (I'm getting another one in just about a week). When I go to pick him up from his cage, he runs around and hides from me, acting like I am a horrible monster. When I finally get him out, he seems fine. He happily squeaks and sometimes even takes a nap on me. Is it just a territorial thing that he's doing, or something else? I love Ollie with all of my heart and want him to be 100% comfortable at all times.