The Sumatran tiger is the smallest subspecies of tiger in the world. Males range in total length from 220 to 255 cm (87 to 100 in) and weigh between 100 to 140 kg (220 to 310 lb), while females range between 215 to 230 cm (85 to 91 in) and 75 to 110 kg (165 to 243 lb). The Sumatran tiger is today a critically endangered species of tiger with only around 400 thought to be in the wild.
The Sumatran tiger is natively found only on the Indonesian island of Sumatra where the Sumatran tiger can be found inhabiting a variety of habitats from low and highland areas to the mountainous jungle and peat swamp forests.
Because of its small body size the Sumatran tiger is able to move through dense jungle with greater ease than the other tigers.
Their reduced size is an easy adaptation to the thick, dense forests and smaller prey in their native habitat. This subspecies also has the darkest coat, with more narrowly spaced stripes and a longer mane and beard. They have slightly webbed paws that allow them to swim more efficiently after their prey.