This is from rabbit.org
"Feed a minimum of 1 cup vegetables for each 4 lbs. of body weight. Select at least three types of vegetables daily. A variety is necessary in order to obtain the necessary nutrients, with one each day that contains Vitamin A, indicated by an *. Add one vegetable to the diet at a time. Eliminate if it causes soft stools or diarrhea.
Limit fruits to 1-2 tablespoons per 5 lbs. of body weight (none if dieting) from the list below of high fiber fruits. Sugary fruits such as bananas and grapes should be used only sparingly, as occasional treats. Bunnies have a sweet tooth and if left to their own devices will devour sugary foods to the exclusion of healthful ones.
Vegetables:
Alfalfa, radish & clover sprouts
Basil
Beet greens (tops)*
Bok choy
Broccoli (mostly leaves/stems)*
Brussels sprouts
Carrot & carrot tops*
Celery
Cilantro
Clover
Collard greens*
Dandelion greens and flowers (no pesticides)*
Endive*
Escarole
Green peppers
Kale (!#)*
Mint
Mustard greens*
Parsley (!X)*
Pea pods (the flat edible kind)*
Peppermint leaves
Raddichio
Radish tops
Raspberry leaves
Romaine lettuce (no iceberg or light colored leaf)*
Spinach (!#)*
Watercress*
Wheat grass
(!)=Use sparingly or rotate. High in either oxalates (X) or goitrogens (#) and may be toxic in accumulated quantities over a period of time
Fruits:
Apple
Blueberries
Melon
Orange (including peel)
Papaya
Peach
Pear
Pineapple
Plums
Raspberries
Strawberries
Absolutely NO chocolate (poisonous!), cookies, crackers, breakfast cereals, bread, pasta, yogurt drops or other “human treats.” There is research to suggest these items may contribute to fatal cases of enterotoxemia, a toxic overgrowth of “bad” bacteria in the intestinal tract."