Rabbits are small mammals that are found in several parts of the world. The male is called a buck and the female is a doe; a young rabbit is a kitten or kit.
Rabbit habitats include meadows, woods, forests, grasslands, deserts and wetlands. Rabbits live in groups, the European rabbit lives in underground burrows, or rabbit holes. A group of burrows is called a warren. Rabbits are herbivores that feed by grazing on grass, forbs, and leafy weeds. In consequence, their diet contains large amounts of cellulose, which is hard to digest. Rabbits solve this problem by passing two distinct types of feces: hard droppings and soft black viscous pellets, the latter of which are known as caecotrophs and are immediately eaten (a behaviour known as coprophagy). Rabbits reingest their own droppings (rather than chewing the cud as do cows and many other herbivores) to digest their food further and extract sufficient nutrients.
Domestic rabbits can be kept as pets in a back yard hutch or indoors in a cage or house trained to have free roam. Rabbits kept indoors are often referred to as house rabbits. House rabbits typically have an indoor pen or cage and a rabbit-safe place to run and exercise, such as an exercise pen, living room or family room. Rabbits can be trained to use a litter box and some can learn to come when called. Domestic rabbits that do not live indoors can also serve as companions for their owners, typically living in a protected hutch outdoors. Some pet rabbits live in outside hutches during the day for the benefit of fresh air and natural daylight and are brought inside at night. Pet rabbit’s diet typically consists of unlimited hay, a small amount of pellets, and a fair quantity of fresh vegetables and need unrestricted access to fresh clean water. Rabbits are social animals. Rabbits as pets can find their companionship with a variety of creatures, including humans, other rabbits, birds, chinchillas, guinea pigs, and sometimes even cats and dogs (however they require supervision when with dogs and cats, as they might be preyed upon or attacked by these animals). Rabbits can make good pets for younger children when proper parental supervision is provided. As prey animals, rabbits are alert, timid creatures that startle fairly easily. They have fragile bones, especially in their backs, that require support on the belly and bottom when picked up.