I was just having normal play time with my two boys, who are about 1 1/2 years old. They all of the sudden started fighting. I separated them immediately and one of them was much more upset than the other. I took Friedrich, the upset one, to the cage and let him cool down. When I went to check on him again after 10 minutes, he was laying on his side and had really labored breathing. I took him back over to my bed and put the rat who seems ok, Gottlieb to the cage. It looks a bit like Friedrich's ribs might be broken or something. He's not bleeding anywhere that I can find. I know I should get him to a vet, but it's a Saturday and if I can't get a hold of anybody, I need to know what to do. Please help!