The only real warning people need about bully breeds, and the reason I avoid getting one, is hip dysplasia and other joint problems. My sister's dog is only about 8 months and overweight and he has what looks to me like luxating patella in a back knee. I'm working on her now to try and convince her to keep his weight down and see a specialist if she can. I may just go ahead and buy him some joint supplements myself if she's too cheap to do it. Maybe I can convince her to get pet insurance. He's probably going to need it sooner than later.