Quagga

Quagga were a sub-species of zebra. Unlike their cousins' black-and white colouration, quagga had, according to the Tenth Doctor, a "chestnut brown colour with white stripes". Also, the stripes were not universally applied over their bodies — they were "only striped on the head and part of the body".

Quagga had died out because settlers in southern Africa were trying to protect their grazing land for cattle. Humans had not even understood that quagga were a unique species, and didn't even recognise that they had exterminated the species until it was far too late. The last quagga — save for the one in the Museum of the Last Ones — perished in an Amsterdam zoo in 1883.

The quagga was worth 200 points in the I-Spyder Book of Earth Creatures and the last one was kept in the Museum of the Last Ones. Unfortunately, the last quagga was stolen by Frank in order to sell the skin for a profit. (NSA: The Last Dodo)