Otters are so fun to watch. It seems their primary purpose is to enjoy life. Although they do get feed 6 times a day in this place, they have it pretty easy. But they know how to enjoy it.
It turns out that an area the size of your thumb print on their hair contains as many or more of what a human has on their head. Also they actually have an air pocket between their hair which acts like insulation. And they can blow in to their hair to fill it up.
Marmosets are so small and cute.