The Arctic reindeer, also known as the East Greenland reindeer, is an extinct subspecies of reindeer that lived in Eastern Greenland. It was declared extinct in 1900. There is another extinct subspecies of reindeer called the Queen Charlotte island caribou which went extinct 8 years later. I noticed this species from Lost animals of the 20th century. The reindeer's skin was generally grayish or dirty white with a darker brownish back but its most striking feature was its antlers.