Grévy's zebra
The Grévy's zebra is the largest of all wild equines. It is from head to tail with a tail, and stands high at the withers. These zebras weigh . Grévy's zebra differs from the other two zebras in its more primitive characteristics. It is particularly mule-like in appearance; the head is large, long, and narrow with elongated nostril openings; the ears are very large, rounded, and conical and the neck is short but thick. The zebra's muzzle is ash-grey to black in colour with the lips having whiskers. The mane is tall and erect; juveniles have a mane that extends to the length of the back and shortens as they reach adulthood.
Cape mountain zebra
The Cape mountain zebra is not territorial, and populations consist of small groups of two types: breeding groups and bachelor groups. A breeding herd consists of a mature stallion and up to five mares and their foals. Stallions that cannot obtain mares associate in less defined bachelor groups. Once established, breeding groups normally stay together for many years; one stallion in the Mountain Zebra National Park is known to have stayed with his herd for more than a decade until he was at least 17 years old. 
Foals leave their herds on their own accord at around 22 months of age, and unlike the Hartmann subspecies whose mares force foals out, stallions of the Cape subspecies actually try to prevent them leaving. This behaviour of foals in free-ranging populations could be a mechanism to prevent inbreeding.