Zoo animals from polar bear to walrus make their distinctive sounds for each other, while children imitate the sounds for the zookeeper.

Cat the Cat's animal friends make many different sounds.

After being hit on the head, Hilda the singing cow forgets what sound she should make, so she imitates different animals until she gets her "moo" back.

As the night becomes still, one big frog lets out his croaking song, followed by two tiny friends, until groups of as many as ten frogs have all joined in, in voices of all sorts, but when a car passes near, all songs are silenced.

When a cow loses her moo, she searches to see if another animal in the barn has it.

When Hilda Mae Heifer's trademark "moo" starts sounding even worse, the other animals decide she is lonely and hold auditions to find her some singing partners.

In rhyming text, the reader is asked to mimic a variety of animal noises in preparation for a good night's sleep.

Bedtime becomes a jungle safari until the Big Safari Ranger brings it to a halt.

A baby rooster learns through trial and error what sounds he must crow in the morning to wake up the rest of the farm.

Since he was knee-high to a grasshopper, little Stu's favorite place to visit was the nearby zoo. He was there so often that even the animals recognized him. The animals' sounds, from the coos and the snorts, and the squeaks and bellows, and the brays and the whistles, were music to his ears. His mother called it a symphony. Stu loved to pretend to be a conductor when he listened to the animals. But now there is trouble brewing at the zoo. A man wants...