Wild rabbits Wild rabbits spend much of their time foraging in meadows and fields eating wild grasses, herbs, flowers, leaves, and twigs. They also consume some fruits, vegetables, and grains as they come across them, but these do not make up a large part of their diet.They get much of the water they need from the fresh leaves and grasses they eat. Rabbits mostly eat lettuce, carrots and vegetables. Rabbits eat grass because they don't have sharp teeth.Pet rabbits Pet bunnies require a special diet high in fibre, moderate in proteins, low in fats, calcium, and sugar, and with the right mix of vitamins and nutrients.hey also consume some fruits, vegetables, and grains as they come across them, but these do not make up a large part of their diet. They get much of the water they need from the fresh leaves and grasses they eat. Rabbits mostly eat lettuce, carrots and vegetables. Rabbits eat grass because they don't have sharp teeth.