Despite their size, howlers live in the treetops and feed among the thin upper branches. Howlers select the fruit they eat by color as well as scent. Unlike lemurs, monkeys have color vision and use color in their body language. Attenborough says they are the most vividly colored of the mammals. Next we travel to Africa and note one important difference between South American and African monkeys.
Many African species are terrestrial.
Vervet These monkeys are seen foraging over grasslands. None have grasping tails. Attenborough comments that there are plenty of grasslands in South America, but there are no monkeys adapted to them. Similarly, there are plenty of trees and tree-living monkeys in Africa, but none of them have grasping tails. Offer evolutionary explanations of these two observations.