what is quagga?
A subspecies of the plains zebra.
Quagga
The quagga ( or ) ("Equus quagga quagga") was a subspecies of the plains zebra that lived in South Africa until becoming extinct late in the 19th century. 
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Quagga [SEP] Introduction
The quagga ( or ) ("Equus quagga quagga") was a subspecies of the plains zebra that lived in South Africa until becoming extinct late in the 19th century. It was long thought to be a distinct species, but early genetic studies have supported it being a subspecies of plains zebra. A more recent study suggested that it was the southernmost cline or ecotype of the species. The name comes from the Khoekhoe language and is thought to be derived from its call, which sounded like "kwa-ha". The quagga is believed to have been around long and tall at the shoulder.