I hope I can describe this correctly and that someone may know what is wrong! We have 3 two month old bunnies who have been totally healthy and active so far. I just went out to put them in their run for a few hours and noticed a big bulge on 1 of the babies chest. Upon closer inspection I saw that he has a hole in his chest about the size of a pea with something brown peeking out of it. I know this sounds strange, but that is exactly what it looks like! I take them out to play every day and did not notice this yesterday. The hole looks perfectly round, not like a bite or injury and it is not bleeding. He acts fine, is eating and moving around normally. I have no idea what to do. Since it's Sunday, no vets are in. Can somebody please help? I don't know what to do!