Second only to the stunning Jaguars in the mammal department, these guys were fantastic value on the River Cuiaba and subsidiaries in the Pantanal.
Clearly very sociable creatures, we had the privilege of watching two different family groups interacting and feeding during our time on the river, both times around half a dozen animals.
The species is now categorised as endangered, with only a few thousand left in the world, centred around the Amazon basin. The biggest individuals are well over five feet long, and all have a pretty ferocious set of teeth.
From some angles, the somewhat sinister and slippery face with big beady eyes recalled Gollum…
… but from others it has to be said that they’re really quite cute!