Carrot Crumbles for Rodents Dovoplus Grass Crumbles are natural crumbles based on carrots. This version contains carrots. The crumbles are used as part of a diet for your rabbit or Rodents and should be of high quality. The crumbles contain a lot of fiber and important nutrients that Rodents need and support good intestinal health. Additionally, the crumbles are essential for the natural wear of rabbit or Rodents' teeth and to prevent damage to molars and incisors.