Hi Everyone! I have a new baby rat named Arlo, and he's super timid and jumpy. Every rat I've had was jumpy and scared of me from the start but Arlo bites.. HARD. He's made me bleed pretty bad before. He would look super curious, walk up to my finger, sniff it, and bite the CRAP out of it. He hasn't done it to any other random objects.. Just my finger. I don't know what to do! I really wanna introduce him to my other boys because I feel bad that he's by himself, But I'm really afraid of him biting my boys and seriously hurting them... Any advice or tips?