Although many otters are highly social animals and often live in small family groups, the hairy-nosed otter is thought to be a largely solitary species, like its cousin the Eurasian otter (Lutra lutra). However, groups of up to six otters have been seen, and it is possible that small family units of parents with their cubs form after the breeding season. The timing of this is not fully understood, but is thought that cubs are born from December through to February after a two month gestation period (1) (5).