This is the smallest subspecies of tiger, weighing a maximum of only 140 kilograms. Despite this, they can take down prey up to four times their size, including small elephants, gaurs (large wild cattle) and tapirs, alongside smaller prey such as deer and monkeys. Cubs start hunting by themselves by eighteen months old – until then, they accompany their mothers on her hunts. Sumatran tigers have webbing between their paws, making them strong swimmers, and they sleep for up to twenty hours per day.