Wild Mammals of Wyoming and Yellowstone National Park

Wolf

Field Guide to Whales, Dolphins and Porpoises

Last Chance To See

The Sixth Extinction: An Unnatural History

Sasquatch: Legend Meets Science

Zoology: An Introduction

The Dragon Behind the Glass: A True Story of Power, Obsession, and the World's Most Coveted Fish

Monster of God: The Man-Eating Predator in the Jungles of History and the Mind

The Last Rhinos: My Battle to Save One of the World's Greatest Creatures

Pit Bull: The Battle over an American Icon

Dogs: Their Fossil Relatives & Evolutionary History

Systematics and Evolution of the Sthenurine Kangaroos

Wild Cats of the World

The Eye of the Elephant: An Epic Adventure in the African Wilderness

End of the Megafauna: The Fate of the World's Hugest, Fiercest, and Strangest Animals

The Domestic Cat: The Biology of its Behaviour, Edition 3

Animals Make Us Human: Creating the Best Life for Animals

The Whale Warriors: The Battle at the Bottom of the World to Save the Planet's Largest Mammals