It is safe for rabbits to eat mint leaves. Mint leaves can be fed in addition to other leafy herbs and greens such as, spinach, carrot tops, turnip greens, Swiss chard and mustard greens.
Greens make up a total of 75 percent of a rabbit's daily nutritional needs. For every 2 pounds that a rabbit weighs, they should be fed 1 packed cup of greens.
Non-leafy vegetables can make up 15 percent of a rabbit's daily diet, and they include carrots, celery, bell peppers and summer squash. Rabbits may also be fed an assortment of fruits, which include mangoes, melons, papayas and bananas.