Sumatran tigers are critically endangered, and only about 400 still exist in the wild on their native island of Sumatra. They are the smallest subspecies of tiger, growing 6.5 to 7.8 feet long and weighing 176 to 330 pounds.
The tiger's small size allows it to move easily through the dense forests in which it lives. It has narrower stripes than other types of tiger, and its mane is notably longer. Its paws are slightly webbed, which helps it swim. It is an apex predator in its habitat, which means no other animal preys on it. Only humans are a danger to the tiger, and its numbers have been reduced by hunting and habitat destruction.
The Sumatran tigress is pregnant for three to four months before giving birth. She can produce as many as five cubs, and they are blind and helpless at birth. The mother nurses them for about two months before introducing them to meat. Tiger cubs stay with their mother for about 18 months before striking out on their own. Sumatran tigers live 18 to 25 years in the wild.
The Sumatran tiger is solitary except during the mating season. It hunts deer, cattle, boar and goats.