Equus (genus)
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Equus is a genus of mammals in the perissodactyl family Equidae, which includes horses, asses, and zebras. Within the Equidae, Equus is the only recognized extant genus, comprising seven living specie
Equus species
A mule (horse and donkey hybrid)
From left to right: a cranium, a complete skeleton, a left forefoot frontal, and a left forefoot lateral from a Grévy's zebra
Group of onagers grazing
Horse
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The horse is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of Equus ferus. The horse has evolved over the past 45 to 55 millio
Equus (genus)
…evidence supports the division of Equus species into noncaballoid (which includes zebras and asses) and caballoids or "true horses" (which includes E. caballus and E. ferus przewalskii, alternatively E. przewalskii). Of the extant equine species, the lineage of the asses may have diverged first, possibly as…
Nokota Horses cropped
External anatomy of a horse
Size varies greatly among horse breeds, as with this full-sized horse and small pony.
Bay (left) and chestnut (right) are two of the most common coat colors, seen in almost all breeds.