Sumatran tigers are the most well known species of tiger. Also known as the Sunda tiger, this subspecies is only found in the wild in the tiny island of Sumatra. These tigers are a darker orange than other species, and have thicker and darker stripes which are closer together and often doubled. The Sumatran tiger also has stripes on its forelegs. It is the smallest tiger (other than the extinct Balinese tiger) and is critically endangered.