Title: The mentalities of gorillas and orangutans
Subjects: Animals, Psychology, NATURE, SCIENCE, Gorilla gorilla, Gorilla, Gorille, Primatology, Bornean orangutan, Life Sciences, Moeurs et comportement, Orang-outan, Comparative Psychology, Zoology, Pongo pygmaeus, Primates, Orangutan, Orangutans, Psychology, comparative