Lowland forest to submountain and mountain forest. Sumatran tigers are one of five subspecies of tigers in the world. The other subspecies include the Bengal tiger, Indochinese tiger, Siberian tiger and South China tiger. Originally there were eight subspecies of tigers, however three have become extinct. Sumatran tigers are the smallest and darkest subspecies of tigers.
Tigers are mostly solitary animals, except during mating and when females are with cubs.
Tiger cubs are born with their eyes closed and weight about two pounds. After a week or two, the cub's eye's open and its first teeth begin to grow. The cubs will nurse for three to six months and begin to follow their mother on hunts at five or six months of age. Cubs will continue hunting with their mother until they are 18-30 months old. Young tigers leave their mother at about the same time to look for their own territory and a mate.