This streamlined website is very accessible to the lay reader, while it also has enough references to scientific studies to appeal to teachers, researchers, and students of animal communication and biology in general. The site contains the full-text of the (now out-of-print) book, The Language of Animals, in addition to "Research News" and some multimedia features. The type of animal communication this website refers to is not that between animals and humans, but among animals. Visitors with pet dogs or cats might enjoy the section on "Cats and Dogs" that explains how lions communicate, and why the domesticated dog barks, but other members of the dog family, such as wolves and coyotes, do not.