The
lagomorphs are the members of the taxonomic
order Lagomorpha, of which there are two living
families: the
Leporidae (
hares and
rabbits) and the
Ochotonidae (
pikas). The name of the order is derived from the Ancient Greek
lagos (λαγώς, "hare") +
morphē (μορφή, "form"). There are about eighty-seven species of lagomorph, including about twenty-nine species of pika, twenty-eight species of rabbit and cottontail, and thirty species of hare.