<P> The Hagerman horse (Equus simplicidens) is sometimes referred to as the American zebra due to perceived similarities to the plains zebra, and sometimes depicted as striped . However, consensus appears to be that it wasn't particularly closely related to either Hippotigiris nor Dolichohippus, nor is there unambiguous evidence that it had stripes . </P> <P> The common plains zebra is about 1.2--1.3 m (47--51 in) at the shoulder with a body ranging from 2--2.6 m (6.6--8.5 ft) long with a 0.5 m (20 in) tail . It can weigh up to 350 kg (770 lb), males being slightly bigger than females . Grévy's zebra is considerably larger, while the mountain zebra is somewhat smaller . </P> <P> It was previously believed that zebras were white animals with black stripes, since some zebras have white underbellies . Embryological evidence, however, shows that the animal's background color is black and the white stripes and bellies are additions . It is likely that the stripes are caused by a combination of factors . </P> <P> The stripes are typically vertical on the head, neck, forequarters, and main body, with horizontal stripes at the rear and on the legs of the animal . </P>

How do you know if a zebra is black with white stripes
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