Watch your older rabbits teeth. Hip Hop is 12 and never had any problems with his teeth but I took him to the vet today and she said they were over grown and were causing him problems. They just called me and said that the procedure to trim them went fine! I'll pick him up tomorrow after work. It's not just the front ones but also their back teeth you have to watch. Make sure you see a vet that's good with rabbits. Brent