Discusses the reintroduction of the horse by Columbus, after its having been extinct in North America for 8500 years, and how that animal changed forever the lives of North Americans.
A young porcupine grows up fast on the north rim of the Grand Canyon as she seeks shelter from plunging temperatures and fierce winds and protects herself from the many dangers of her wilderness habitat.
A black-footed ferret, bred in captivity and released in the wild, tries to evade her natural enemies while raising her young in abandoned prairie dog burrows.
As the seasons pass, Snowshoe Hare's coat changes from brown to white and back to brown again, helping her to blend into her habitat and avoid predators as she searches for food.
A tiny loggerhead turtle hatches on the beach, rushes to the water, and makes her journey far out to sea, where she grows bigger and stronger in preparation for returning to the beach to lay her own eggs.
In Alaska, a walrus calf and his mother make their last trip together to the summer feeding grounds in the Chuckchi Sea before he is ready to leave the nursery herd and take his place with the bulls.