page_title: List of mammals of the United States
section_title: Order: Lagomorpha (lagomorphs)
hierarchical_section_title: List of mammals of the United States / Subclass: Theria / Infraclass: Eutheria / Order: Lagomorpha (lagomorphs)
caption_attribution_description: Deutsch: Amerikanischer Pfeifhase (Pika) in den Kanadischen Rocky Mountains.
context_page_description: About 490 species of mammals are recorded in the United States. This list is probably incomplete. Unincorporated territories like for example Puerto Rico, Guam or Northern Mariana Islands are not covered. Mammals introduced and extinct in the Holocene except Pleistocene/Holocene boundary are included.
  According to the IUCN Red List 3 of these species are critically endangered, 20 endangered, 15 vulnerable, 20 near threatened and 4 extinct.
  Some species are identified as indicated below:
  - Accidental
  - Extinct
  - Extirpated
  (I) - Introduced
  The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature:
  and the Endangered Species Act:
context_section_description: The lagomorphs comprise two families, Leporidae (hares and rabbits), and Ochotonidae (pikas). Though they can resemble rodents, and were classified as a superfamily in that order until the early 20th century, they have since been considered a separate order. They differ from rodents in a number of physical characteristics, such as having four incisors in the upper jaw rather than two.
  Family: Ochotonidae (pikas)
  Collared pika, Ochotona collaris  (Alaska only) LC
  American pika, Ochotona princeps  LC
  Family: Leporidae (rabbits, hares)
  Pygmy rabbit, Brachylagus idahoensis  LC E
  Swamp rabbit, Sylvilagus aquaticus  LC
  Desert cottontail, Sylvilagus audubonii  LC
  Brush rabbit, Sylvilagus bachmani  LC (ssp. riparius: E)
  Manzano mountain cottontail, Sylvilagus cognatus  DD (formerly in Sylvilagus floridanus)
  Eastern cottontail, Sylvilagus floridanus  LC
  Mountain cottontail, Sylvilagus nuttallii  LC
  Appalachian cottontail, Sylvilagus obscurus  NT
  Marsh rabbit, Sylvilagus palustris  LC (Lower Keys marsh rabbit, S. p. hefneri: E)
  Robust cottontail, Sylvilagus robustus  EN
  New England cottontail, Sylvilagus transitionalis  VU
  Antelope jackrabbit, Lepus alleni  LC
  Snowshoe hare, Lepus americanus  LC
  Black-tailed jackrabbit, Lepus californicus  LC
  White-sided jackrabbit, Lepus callotis  NT
  Alaskan hare, Lepus othus  (Alaska only) LC
  White-tailed jackrabbit, Lepus townsendii  LC
caption: American pika
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