Monogamy in gibbons. Social bonds. One male multiple females in gorillas.
Stool culture
Language and communication
Altruism
Hunting.
Wilson believes primate behaviour influenced by natural selection
Dimorphism when males compete for females.
Competition to meeting infanticide. Hierarchy among females as well as males.
Hamilton. Kinship grooming activity and cooperation.
Female more burden for food and child care.
Jane goodall. Teej each other 2 cracked nuts.
Klaus Z. Vocal communication and sounds for rivals snakes tiger. Nonverbal gestures
Dr Rumbaugh. Consider the app. Koko the Gorilla sign language.
But only upto a limit nim chimpsky.
Separation. 25 million years ago monkeys point 14 million years ago old world and new world monkeys. 18 gibbons and see among. 14 orangutan 12 Gorilla 8 chimpanzee. Larsen 2016.