Earth was a lot different when dinosaurs were alive. They lived alongside many ancient mammals that can no longer be found. Incredible changes on Earth have left us with fossils that scientists use to learn more about the ancestors of today's mammals.

Earth was a lot different when dinosaurs were alive. They lived alongside many ancient mammals that can no longer be found. Incredible changes on Earth have left us with fossils that scientists use to learn more about the ancestors of today's mammals.

Earth was a lot different when dinosaurs were alive. Scientists study important clues that were left behind to learn what kinds of dinosaurs lived where, what they ate, and how fast they could run. Even though there have been incredible changes on Earth, there are still dinosaur relatives living today!

Read about the great white shark, who is the deadliest hunter of the sea and can catch big prey. Amazing photos and simple text make this book a great high-interest read.

Learn all about different kinds of vile animals. Discover fascinating facts, from fish that are known as vacuums with teeth to why some lizards spurt blood from their eyes. Amazing photos and simple text make this book a great high-interest read.

Learn all about different kinds of vile animals. Discover fascinating facts, from fish that are known as vacuums with teeth to why some lizards spurt blood from their eyes. Amazing photos and simple text make this book a great high-interest read.

Learn all about different kinds of nauseating foods. Discover fascinating facts, from the texture of fish eyeballs to foods that are made with animal blood. Amazing photos and simple text make this book a great high-interest read.

Learn all about different kinds of jaw-dropping jobs. Discover fascinating facts, from what happens to amusement park vomit to why inspectors test animal poop. Amazing photos and simple text make this book a great high-interest read.

Learn all about different kinds of jaw-dropping jobs. Discover fascinating facts, from what happens to amusement park vomit to why inspectors test animal poop. Amazing photos and simple text make this book a great high-interest read.

Learn all about different kinds of sickening parasites. Discover fascinating facts, from the cousins of tongue-eating lice to how brainworms get inside animals. Amazing photos and simple text make this book a great high-interest read.

Learn all about different kinds of sickening parasites. Discover fascinating facts, from the cousins of tongue-eating lice to how brainworms get inside animals. Amazing photos and simple text make this book a great high-interest read.

Learn all about different kinds of stomach-turning smells. Discover fascinating facts, from the gases that make up farts to skunk behavior before a spray. Amazing photos and simple text make this book a great high-interest read.

Learn all about the foul things found in human bodies. Discover fascinating facts, from the cause of foot fungus to why bodies need mucus. Amazing photos and simple text make this book a great high-interest read.

Learn all about the foul things found in human bodies. Discover fascinating facts, from the cause of foot fungus to why bodies need mucus. Amazing photos and simple text make this book a great high-interest read.

Long, short, over, and under are just a few words we use to describe objects and their locations. This book teaches young readers about descriptive words and how they help us describe our world.

Long, short, over, and under are just a few words we use to describe objects and their locations. This book teaches young readers about descriptive words and how they help us describe our world.

Wind and water move sand and soil and carve rock. Enormous plates of land push against each other and create mountains. Find out how these incredible changes on Earth have happened over time.