The Bolivian squirrel monkeys love snatching sunglasses from visitors. The London Zoo in London decided they had to be weaned from this naughty habit. They smeared bitter apple on sunglasses and left them lying about for the Bolivian squirrel monkey to find. These monkeys dislike anything that has a sour taste.
The Bolivian squirrel monkey is only 10 1/2 to 12 1/2 inches long with a 15 to 16 1/2 inch tail. Its tail is longer than its head and body but it is very slim. The tip however is bushy and black. Thismonkey's face is small and white with a large forehead. Its head crown is dark and it has a black nose tip and muzzle.
Bolivian squirrel monkeys live in groups called troops. Their troops average 40 to 50 members and may reach up to 200. The troops of squirrel monkeys are the largest and most active of the monkeys that inhabit the Americas. They are noisy, twittering and clucking. The large troops have smaller peer groups.