Pentalagus Bunolagus Nesolagus Romerolagus Brachylagus Sylvilagus Oryctolagus Poelagus Caprolagus Pronolagus Lepus †Aztlanolagus †Nuralagus Leporidae (/ləˈpɔːrɪdiː, -daɪ/) is the family of rabbits and hares, containing over 70 species of extant mammals in all.

Leporidae differ from pikas in that they have short, furry tails and elongated ears and hind legs.

Their eyes are large, and their night vision is good, reflecting their primarily nocturnal or crepuscular mode of living.

Hares rarely dig shelters of any kind, instead using forms, and their bodies are more suited to fast running than to burrowing.

This is in part because young hares (called leverets) are born precocial (eyes and ears open, fully furred), while young rabbits (called kits) are born altricial (eyes and ears closed, no fur).

[11] Leporids can have several litters a year, which can cause their population to expand dramatically in a short time when resources are plentiful.

The oldest known leporid species date from the late Eocene, by which time the family was already present in both North America and Asia.

For example, Palaeolagus, an extinct rabbit from the Oligocene of North America, had shorter hind legs than modern forms (indicating it ran rather than hopped) though it was in most other respects quite rabbit-like.