The water chevrotain swims underwater to avoid predators – they can even walk on the riverbed in order to avoid being swept along by the current, grabbing hold of reeds to assist.

They can hold their breath for about 4 minutes, but tire easily while swimming.

Species can vary in weight from 4 to around 33 pounds, though none get larger than a medium-sized dog.

They are prey animals, and with nothing but their sharp teeth for protection, all of the species lead fairly secluded, quiet lives. Some are nocturnal, and most graze alone, only hanging out together to mate.