Many of the animals have never lived in social groups before and have never seen an adult monkey, as they are the offspring of monkeys taken from the wild for breeding.

BBC: RSPCA demands monkey import ban

The monkeys are wild, but they are accustomed to visitors, and more importantly, the guides know where they hang out, so kids can see the monkeys howling it up in their natural habitat.

BBC: Family fun in Belize

Liraglutide does not boost thyroid cancer risk in monkeys even when they are given enormous doses, he says.

FORBES: Drug Safety

As the monkeys' forest habitat disappears, they are becoming easier to capture and to put to work.

ECONOMIST: Monkey business | The

Lemurs are primates so distantly related to humans they look more like cats than monkeys.

BBC: Humans share lemur gaze tendency

Smaller operators learn to work alongside, rather than against them, and the gorillas are happy with the chimps and spider monkeys, so long as they keep bringing the bananas.

FORBES: Microsoft: A Slim & Trim 800-Pound Gorilla

Combined with the Jungle Book suite of animals and the bamboo lodges, with their sprawling gardens and troops of monkeys, they make you feel as if you are stepping back into the British Raj.

FORBES: Off the Beaten Track: Kaziranga National Park, India

In both titi and owl monkeys, the father assumes the critical duty of carrying his children around until they are able to move safely and independently through the trees.

ECONOMIST: Why women outlive men

The monkeys are then taught at least six different commands and how to pick coconuts according to how ripe they are.

ECONOMIST: Monkey business | The