All rabbits and hare are adapted for quick movement and fast exit from danger. Hind legs are strong. Ears are large and mobile to detect predators movements. Eyes are adapted to twilight and night-time activities. Forefeet have five toes, hindfeet have four, all having claws.
Hares usually use surface depressions, called forms, as resting sites.
Some hare species may burrow during adverse conditions. Rabbits burrow underground networks of tunnels and chambers and show considerable variety in form depending on species and habitat. Occurrence of rabbits and hares in different climatic conditions is reflected in molting physiology. One to three molts are undergone in a years time according to specie. In some cases there is a sharp contrast in coloration between summer and winter coat color depending on specie and habitat.