He's been healthy in my DT for two months after 6 weeks QT (without meds). Eating like a champ and starting to nip a bit.... Anyways, he didn't come out for breakfast so I was cutlrious and saw him an a cave swimming upside down and doing some some slow spins. Though he was hunting at first but I think he might be sick. Any ideas? Anything I can do? Is it contagious?