Animal & Comparative Psychology

The Expression of the Emotions in Man and Animals

Animal intelligence: Experimental studies

The Dancing Mouse: A Study in Animal Behavior

The Mental Life of Monkeys and Apes: A Study of Ideational Behavior

Animal intelligence: Experimental studies

Clever Hans (The Horse of Mr. Von Osten)

Through the Magic Door

The Secret of Father Brown

The History of Animals

Finding Your Ideal Companion

The Ethical Degu Guardian's Guide to Optimal Care

The African Pygmy Hedgehog Wellness Guide

The Human Herd