Laugh and learn with fun facts about prehistoric mammals including saber-toothed cats, dire wolves, giant horses, Stone Age humans, and more—all told in Dr. Seuss’s beloved rhyming style and starring the Cat in the Hat!

“I’m the Cat in the Hat. Oh, please turn the page to discover some mammals from the Great Ice Age!”

The Cat in the Hat’s Learning Library series combines beloved characters, engaging rhymes, and Seussian illustrations to introduce children to non-fiction topics from the real world! Travel back in time and learn:
 
•       the difference between mammoths and mastodons
•       how giant sloths grew as big as elephants
•       how we study fossils to guess how animals looked and behaved
•       and much more!
 
Perfect for story time and for the youngest readers, Once upon a Mastodon: All About Prehistoric Mammals also includes an index, glossary, and suggestions for further learning.

Look for more books in the Cat in the Hat’s Learning Library series!
If I Ran the Horse Show: All About Horses
Clam-I-Am! All About the Beach
Miles and Miles of Reptiles: All About Reptiles
A Whale of a Tale! All About Porpoises, Dolphins, and Whales
Safari, So Good! All About African Wildlife
There's a Map on My Lap! All About Maps
Oh, the Lavas That Flow! All About Volcanoes
Out of Sight Till Tonight! All About Nocturnal Animals
What Cat Is That? All About Cats
Oh Say Can You Say What's the Weather Today? All About Weather
The Cat on the Mat: All About Mindfulness
Bonnie Worth is the author of countless books for young readers, among them 18 of the Cat in the Hat's Learning Library books, including Oh Say Can You Say Di-No-Saur?, If I Ran the Rain Forest, Oh Say Can You Seed? (winner of the 2003 Ohio Farm Bureau Award), Hark! A Shark!, and If I Ran the Horse Show. View titles by Bonnie Worth
New Jersey native and "constant doodler" ARISTIDES ("Art") RUIZ has illustrated over 100 books for children—among them 40+ books in the Cat in the Hat's Learning Library series. A versatile artist, he divides his time between illustrating for children and fine art painting. View titles by Aristides Ruiz
Joe Mathieu has illustrated countless books for children, including Big Frank’s Fire Truck, Sesame Street titles, books in the Cat in the Hat’s Learning Library series, and many more. View titles by Joe Mathieu

About

Laugh and learn with fun facts about prehistoric mammals including saber-toothed cats, dire wolves, giant horses, Stone Age humans, and more—all told in Dr. Seuss’s beloved rhyming style and starring the Cat in the Hat!

“I’m the Cat in the Hat. Oh, please turn the page to discover some mammals from the Great Ice Age!”

The Cat in the Hat’s Learning Library series combines beloved characters, engaging rhymes, and Seussian illustrations to introduce children to non-fiction topics from the real world! Travel back in time and learn:
 
•       the difference between mammoths and mastodons
•       how giant sloths grew as big as elephants
•       how we study fossils to guess how animals looked and behaved
•       and much more!
 
Perfect for story time and for the youngest readers, Once upon a Mastodon: All About Prehistoric Mammals also includes an index, glossary, and suggestions for further learning.

Look for more books in the Cat in the Hat’s Learning Library series!
If I Ran the Horse Show: All About Horses
Clam-I-Am! All About the Beach
Miles and Miles of Reptiles: All About Reptiles
A Whale of a Tale! All About Porpoises, Dolphins, and Whales
Safari, So Good! All About African Wildlife
There's a Map on My Lap! All About Maps
Oh, the Lavas That Flow! All About Volcanoes
Out of Sight Till Tonight! All About Nocturnal Animals
What Cat Is That? All About Cats
Oh Say Can You Say What's the Weather Today? All About Weather
The Cat on the Mat: All About Mindfulness

Author

Bonnie Worth is the author of countless books for young readers, among them 18 of the Cat in the Hat's Learning Library books, including Oh Say Can You Say Di-No-Saur?, If I Ran the Rain Forest, Oh Say Can You Seed? (winner of the 2003 Ohio Farm Bureau Award), Hark! A Shark!, and If I Ran the Horse Show. View titles by Bonnie Worth
New Jersey native and "constant doodler" ARISTIDES ("Art") RUIZ has illustrated over 100 books for children—among them 40+ books in the Cat in the Hat's Learning Library series. A versatile artist, he divides his time between illustrating for children and fine art painting. View titles by Aristides Ruiz
Joe Mathieu has illustrated countless books for children, including Big Frank’s Fire Truck, Sesame Street titles, books in the Cat in the Hat’s Learning Library series, and many more. View titles by Joe Mathieu

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