Source:http://linkedlifedata.com/resource/umls/id/C0019944
MSH: Large, hoofed mammals of the family EQUIDAE. Horses are active day and night with most of the day spent seeking and consuming food. Feeding peaks occur in the early morning and late afternoon, and there are several daily periods of rest.,CSP: large solid-hoofed herbivorous mammal (Equus caballus, family Equidae, the horse family) domesticated since a prehistoric period and used as a beast of burden, a draft animal, or for riding.,NCI: The domestic horse, Equus caballus. (NCI),NCI: The domestic horse, Equus caballus.