Describes how wolves find their food, usually in packs, by tracking and attacking their prey.

An introduction to the physical characteristics, habits, and natural environment of cows and their relationship to humans.

Describes the physical characteristics, behavior, and habitat of these plantlike sea animals.

Describes the life cycle, habitats, and reputation of both Old and New World vultures.

Describes how animals without teeth can defend themselves.

Discusses reasons that wolves were almost hunted out of existence in the United States and efforts to reintroduce these animals to certain areas of the northern United States.

Describes the physical characteristics and habits of llamas and how they are now raised domestically across the United States.

Describes the appearance and behavior of various snakes around the world, such as garter snakes, boa constrictors, king snakes, and pythons.

Introduces the physical characteristics, habits, and natural environment of ducks.