since my rabbit got an abscess in his mouth from a broken back tooth in July 2012 I have had a major problem with poopy butt 
I have him on martin mills slow rabbit pellets as well as just timothy pellets he receives 1/2 cup of both, he gets unlimited hay I have orchard, grass, timothy, botanical, and on occasion a small amount of alfalfa… but he really doesn’t like hay. he gets two papaya tablets oats, and a few piece of dried strawberry.
but whenever I give him vegetables he gets extreme poopy but at first I thought it was the pellets so I cut those out and than I thought it was his treats so I stopped that but than I realized it was the vegetables I only give him 3 types a day I tend to go between these vegetables Cilantro, dandelion greens, Mint, Basil, Romaine lettuce,Carrot tops, Dill leaves as well as occasionally Celery, Broccoli, Brussel sprouts and cucumber , spinach .. every time no matter what type he gets poopy butt.. what am I doing wrong? if I don’t give him any vegetables he if fine no poopy butt I just feel bad if I have to cut it out completely.. is there anything I am doing wrong? please help!