The insect order Hemiptera consists of True Bugs such as Stainers, Assassin Bugs, Leaf-Footed Bugs, and this Boxelder Bug.

Pick up some peafowl facts on this worksheet with vibrant illustrations. Little ones will read about different types of peafowl and answer some questions.

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

This coloring page features a puffed up, spiky blowfish.

Your nature lover can learn the basics of drawing a tree with this simple step-by-step guide.

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

This coloring page allows you to view a lionfish without fearing the touch of its venomous spines.

Get the facts on the beautiful elk, an American treasure and a symbol of Yellowstone National Park.

Check out the unique appearance of the elephant fish in this coloring page.

Did you know that one of the main ingredients of a perfect pearl is dust? Learn all about the bizarre process behind every pearl with this science worksheet.

This lizard can grow to over six feet long! Color the Golden Spotted Monitor Lizard, one of several brand new species discovered between 2009 and 2011.

Give your little animal lover a great coloring sheet, complete with a few fun facts about the red kangaroo!

Butterflies and moths may have very different colors, but they are from the same insect order! Learn about lepidoptera with a fun coloring page.

Can you figure out how the Triceratops got his name? Study this Triceratops fact sheet and see if you can guess.

How blobby can a blobfish be? Check out this coloring page to find out.

Ever wonder how the flying squirrel actually flies? Give your child a great coloring page, all about the flying squirrel!

Check out the big and bright sunfish in this coloring page.

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

For kids who bug out on bugs, here's the perfect coloring page! Learn about the insect order Coleoptera, which we mostly know as beetles.

Get a light lesson in the darkest of creatures, the raven.

Don't believe a bird could catch a rattlesnake? Believe it. The greater roadrunner lives up to its name by running up to 20 miles per hour and hunting snakes.

If your kid gets excited about snakes, you need this cool worksheet. Learn a bit about carpet pythons, such as what colors they may be, and then color the picture.

Help your child learn about the nervous system and the digestive system with this fun worksheet, which will challenge his knowledge of physiology.

Read about a little-talked-about bird that inhabits the wetlands of Yellowstone National Park, the sandhill crane.

If your child loves bugs, he'll adore this coloring page! Learn all about the insect order Homoptera, which consists of Aphids, Hoppers, Cicadas, and more.

This Echidna coloring page features the rare, egg-laying mammal! Add color to the pictures and learn a few fun facts about this rare species.

Walter's Duiker is a new species of duiker, a kind of antelope, and one of many new species discovered between 2009 and 2011.

Guinea pigs are social animals that make great pets. Test your child's knowledge of these furry critters with this fun quiz.

Row, row, row yourself over to this coloring page for a glimpse of the rare American paddlefish.

Color the Namib Desert Beetle crawling along the Prickly Pear Cactus plant.