Rabbit

eastern cottontail rabbit

rabbit, any of 29 species of long-eared mammals belonging to the family Leporidae, excluding hares (genus Lepus).

cottontail rabbit (Sylvilagus)

Frequently the terms rabbit and hare are used interchangeably, a practice that can cause confusion. Jackrabbits, for instance, are actually hares, whereas the rockhares and the hispid hare are rabbits. Rabbits differ from hares in size, life history, and preferred habitat. In general, rabbits are smaller and have shorter ears than hares. They are born without fur and with closed eyes after a gestation period of 30–31 days. They prefer habitats composed of trees and shrubs, where they live in burrows dug into the soil. Hares, in contrast, are larger in size, and they are born fully developed with fur and open eyes after a gestation period lasting about 42 days. They prefer open areas such as prairies, where they make their nests in small open depressions.

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Rabbits are ground dwellers that live in environments ranging from desert to tropical forest and wetland. Their natural geographic range in the Western Hemisphere encompasses the middle latitudes. In the Eastern Hemisphere rabbits are found in Europe, portions of Central and Southern Africa, the Indian subcontinent, Sumatra, and Japan. The European rabbit (Oryctolagus cuniculus) has been introduced to many locations around the world, and all breeds of domestic rabbit originate from the European. Nearly half of the world’s rabbit species are in danger of extinction; many are among the most vulnerable of all mammals.

The long ears of rabbits are most likely an adaptation for detecting predators. In addition to their prominent ears, which can measure up to 6 cm (more than 2 inches) long, rabbits have long, powerful hind legs and a short tail. Each foot has five digits (one reduced); rabbits move about on the tips of the digits in a fashion known as digitigrade locomotion. Full-bodied and egg-shaped, wild rabbits are rather uniform in body proportions and stance. The smallest is the pygmy rabbit (Brachylagus idahoensis), at only 20 cm (7.9 inches) in length and 0.4 kg (0.9 pound) in weight, while the largest grow to 50 cm (19.7 inches) and more than 2 kg (4.4 pounds). The fur is generally long and soft, and its colour ranges through shades of brown, gray, and buff. Exceptions are the black Amami rabbit (Pentalagus furnessi) of Japan and two black-striped species from Southeast Asia. The tail is usually a small puff of fur, generally brownish but white on top in the cottontails (genus Sylvilagus) of North and South America.