Try this (and other) book(s) by primatologist Frans de Waal: https://books.google.it/books?id=vhmZCgAAQBAJ&redir_esc=y https://books.google.it/books?id=vhmZCgA

Try this (and other) book(s) by primatologist Frans de Waal: https://books.google.it/books?id=vhmZCgAAQBAJ&redir_esc=y https://books.google.it/books?id=vhmZCgAAQBAJ&redir_esc=y "A passionate and convincing case for the sophistication of nonhuman minds." —Alison Gopnik, The Atlantic