I adopted a year old guinea pig a few days ago and did what people say about leaving him alone and encouraging contact little by little, but my Ritz is still very skittish? anytime i approach the cage and he is out, he dives into his igloo TERRIFIED! he inches away from it when he gets hungry but just grabs some food and runs back in. after the second day of having him, i noticed he really didnt eat, so i removed his igloo for a while and he finally ate (ALOT). he's always on the watch and never seems to relax? he moves cautiously in quick short hops. today, i gave him a piece of strawberry with my hand and he snatched it and ate in his igloo. i set up his play area and opened his cage so he could come out and interact (and find more strawberries). he started running to every corner to hide and freezing. i tried not to move because he'd go crazy! he eventually ran into his igloo and then i noticed him making a noise that sounded like he was grinding his teeth or chewing something? as well sniffing a lot? maybe he was angry? i fet so bad for stressing him out so i havent really tried anything else. after about an hour, he's still making the sniffing noise and now chewing his cage :/ can someone..help? please.