1. Otters come in all shapes and sizes
There are 13 types of otter in the world, of all different shapes and sizes. Members of the otter family include the South American giant otter — which can reach up to 1.7m in length; the Asian small-clawed otter — the smallest of the otter family; and the sea otter, the heaviest, weighing in at up to 45kg.
2. Otters are part of a much bigger family
The otter is part of the weasel family which includes other carnivorous animals like the weasel, stoat, badger, mink and ferret. But the otter is the only one of this family who’s taken to the water.