Polar Bear vs. Walrus

Chicken Soup for the Soul: Humane Heroes Volume I: Volume 1

Giant Otter vs. Caiman

Pomeranians

Snow Leopard vs. Wild Yak

Shark Life: True Stories About Sharks & the Sea

Praying Mantis vs. Black Widow Spider

In the Heart of the Sea (Young Readers Edition): The True Story of the Whaleship Essex

Zoology for Kids: Understanding and Working with Animals, with 21 Activities

Nile Crocodile vs. Hippopotamus

Anacondas

King Cobra vs. Mongoose

Sharks

Dingo vs. Kangaroo

Pilot Whales

Reptiles

Penguin

Catfish

When the Whales Walked: And Other Incredible Evolutionary Journeys

Wolves