HI, I am a new piggy owner and have made 2 C&C Cages for them after realizing that one was male and one was female. They are doing well except my male makes this really odd sound like he is choking or he has a hairball, I dont even know if that is possible. I dont know what triggers the sound, he dosent seem to be eating when it happens or anything but it worries me. If anyone has any ideas I would appreciate it Thanks