Zebra duiker
Zebra duikers have gold or red-brown coats with 12-16 distinctive zebra-like stripes, dark markings on their upper legs, and russet faces. Newborns appear darker because they are born with their stripes closer together. An adult can grow to in length, 45 cm in height, and in weight. Their horns are short and round with sharp pointed tips. They are about 4.5 - 5.0 cm long in males, and half that in females. Female body size is larger than males, possibly due to long gestation periods.
Plains zebra
The quagga was originally classified as a separate species, "Equus quagga", in 1778. Over the next 50 years or so, many other zebras were described by naturalists and explorers. Because of the great variation in coat patterns (no two zebras are alike), taxonomists were left with a great number of described "species", and no easy way to tell which of these were true species, which were subspecies, and which were simply natural variants. The quagga was the first extinct creature to have its DNA studied. Recent genetic research at the Smithsonian Institution has demonstrated that the quagga was in fact not a separate species at all, but diverged from the plains zebra, between 120,000 and 290,000 years ago, and suggests that it should be named "Equus burchellii quagga". However, according to the rules of biological nomenclature, where two or more alternative names are given to a single species, the name first used takes priority. As the quagga was described about 30 years earlier than Burchell's zebra, the correct terms apparently are "E. quagga quagga" for the quagga and "E. quagga burchellii" for the plains zebra, unless ""Equus burchellii"" is officially declared to be a "nomen conservandum".