Hello. I'm new in the forum. I have a Belgium white bunny. He's 6 and half years old almost. Recently my boy has started to chew his fur from all his legs. He has no skin diseases or mites or fleas. He has had some gas pain lately so I've been giving him some simethicone for his pain and belly massages. I think he might have been tearing at his fur because of gas pain. So, during his belly massage I noticed a small ball (about the size of a tennis ball) inside his stomach. He was facing me and the ball was just under my right hand. It keeps moving around. So I got a hold of it. When I tried to squeeze it sprang away (like when you break a thermometer and can't touch the mercury). I'm scared of bothering my boy about it. So far he hasn't reacted to the poking around in his stomach. But I don't want to make the situation worse without knowing where we stand! Should I be worried? What is this thing?? Is this what you call a gas bubble?