Learn about the animal kingdom with this centipede anatomy worksheet. Fun fact: Centipedes have either 15 or 17 pairs of legs, but never 16!

This spikey Stegosaurus looks fierce, but don't worry -- he's a vegetarian! Learn all about this massive dinosaur with a fun fact sheet.

Next time you head outside for a hike or a camping trip, bring along this checklist of animal tracks!

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

The Mockingbird is Tennesse's state bird: it can mimic the sounds of other birds, and even the sounds of insects.

Read about one of Yellowstone National Park's coolest animals, the big horn sheep.

Discover the symbiotic relationship that helps this angler fish find his next meal!

Teach your child about an endangered species with this information page, all about the Forest Owlet. They can color as they read some interesting facts.

Colorado's state bird is the Lark Bunting, and you can learn all about it with this coloring page.

Color, cut out, and play with these fun animal finger puppets as your nature lover learns more about prairie dogs, bison, and other animals of the grasslands.

Learn about Red River Hogs in this series of animals facts sheets and coloring pages in one.

Bird-watchers will love this worksheet, featuring just a sample of the many song birds flying around Yellowstone National Park.

Practice your detective skills with this fun worksheet! Have your child go around the house and see how many things from the list they can find.

Open your ears for some interesting science! Your little biologist will learn the basic parts of the ear with this diagram.

This bright and colorful worksheet helps your child bring the technical terms of the bones in his legs down to size.

The narwhal is one unusual animal! Your child will learn about this horned sea creature through text and pictures.

Your future oceanographer will enjoy coloring in the multi-eyed octopus in this coloring page in addition to adding color to the cute angel fish beside him!

Learn about Yellowstone National Park's peregrine falcons, which survived heavy pesticide use in the 1960s.

Try out this simple worksheet diagramming the anatomy of a shrimp. Big words, small sea creature.

Learn about the California tiger salamander, which uses its toxic, bad smell as a defense.

Take a quick lesson in the otters that inhabit Yellowstone National Park and take an even quicker quiz.

Explore the circle of life with this informative coloring sheet! Help your student color and learn the names of each stage of a rhino beetleâs life.

If you're fascinated by bugs, check out this coloring page featuring the insect order Odonata, which consists of damselfies and dragonflies.

Explore this diagram of the water hyacinth with your little one. She'll be learning the parts of a flower as she colors in this delighful picture.

The Ohio state bird, the Cardinal, is famous for their bright red color. Can you give this one some color?

All the animals in this word search share one characteristic: none of them have bones! Can your child find the boneless critters hidden in the puzzle?

The Goliath birdeater is a spider that lives in South America. Your child will read a paragraph about spider before writing an opinion sentence.

Does your child know his five senses? Give him an introduction to human anatomy with this sense of touch worksheet.

Find out more about what REALLY dwells in swamp ecosystems with this worksheet all about swamps.