Rabbits
Knabbel eating his carrot weeds, by jpockele / Flickr
Rabbit eating pellets, by Charles Crosbie / Flickr
Rabbits are herbivores, meaning they only eat plants. Rabbits have a high metabolic rate, so they require lots of energy, yet require a large amount of fiber in their diet as well, around 15-17% crude fiber. If rabbits consume too little fiber they can develop intestinal problems such as enterotoxemia. However, if they consume too much fiber, they may become constipated. A properly balance of fiber is essential.