Gorillas live in family groups and have opposable thumbs, while orangutans are highly intelligent and males have features to attract females. Chimpanzees can adapt well and sit differently than other primates. The Golden Cheeked Gibbon communicates nonverbally as a lesser ape, Coquerel's Sifaka has canine features and gets nutrients from food and water, and Mandrills have large canines while being endangered. Squirrel Monkeys have New World noses and opposable thumbs.