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

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.

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.

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.

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.

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

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.

Try this worksheet diagramming a snail anatomy. It takes a snail over two minutes to travel 12 inches, but your 5th grader can finish this worksheet in no time.

See which snail has gotten the farthest with this 2nd grade measurement snail race worksheet.

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

These clever birds harden and disguise themselves as tree branches when threatened. Learn more and do some coloring with this worksheet.

Quiz your kid on the names of bones in his spine with this colorful worksheet.

This kid-friendly, fill-in-the-blank diagram helps your fifth grader learn the technical terms for the bones in his torso.

In 2012, an 80 million-year-old dinosaur was discovered, and you can learn all about this 20-foot, 2-ton horned herbivore.

Looking for a worksheet to help your kid with his knowledge of human biology? This printable will help him with the digestive system.

Did you know wolves are the largest members of the dog family? This fun worksheet is jam-packed with fun facts about the wolf!

Looking for a worksheet to help your child with science? This printable will help them with their biology vocabulary.