Originally published in 1931, The Intelligence of Animals sets out detailed studies of various birds and beasts, some in the wild, some under domestication, and some under semi-domestication, with a view to illustrating the supreme importance of the "mental factor" in biology.
Originally published in 1931, The Intelligence of Animals sets out detailed studies of various birds and beasts, some in the wild, some under domestication, and some under semi-domestication, with a view to illustrating the supreme importance of the "mental factor" in biology.