What's a family? A female elephant herd and its young? A mother orangutan and her baby? A prairie dog town? A troop of chimpanzees led by a single male? Yes! In the wild, every family is different. Naturally! Mammal Jr.: If you as a foal, joey, wolf cub, baby ape, baby water buffalo, or baby owl what they want to be when they grow up, these amazing mammal youngsters will neigh, howl, and hoot that they want to be just like mom and dad.

Explores four species of baby animals at the National Zoo in Washington, D.C.; follows the Golden lion tamarin at the National Zoo; follows tiger cubs at the National Zoo as they take their first steps and first swim.

Explores family behavior among different types of animals and relationships between young animals and their parents. Includes elephants, orangutans, prairie dogs, chimpanzees, and lots of animal babies.

Across the animal kingdom, some of the most essential lessons, and the most extreme challenges, occur in the first moments of life. From ostrich to orangutan, egg sac to live birth, infanticide to matricide, the diversity of behaviors between parent and progeny is as great as the diversity of life on our planet. Understandably, the process of birthing and raising young is one of the most stressful experiences an animal can endure.

Four episodes of the television program which finds Chris and Martin Kratt at the Animal Junction, a place where various other animals like to come and hang out. Together they introduce young viewers to the animal world through songs, video clips and several forms of animation.