Did you know some baby birds take 10 days to hatch, and some can take 80 days! Learn all about these cute creatures and finish your lesson off with a fun maze.

If you're looking to color a chimpanzee, you won't find a coloring page better than this one. Learn some facts about these animals while you're at it.

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

All kids love animals, but how much does your child know about them? Kids will get to learn some animal vocabulary with this wild crossword puzzle.

Learn all about rollie pollies, a small but unique creature that always fascinates little kids. There's even a bit of rollie pollie match to boot.

Ferrets are known for being sneaky, so don't be fooled by this quiz! Discuss this unique animal with your child as she learns some fun ferret facts.

Use this fun frog worksheet to practice place value and expanding numbers.

There aren't many blue animals out there, but here's one that will be fun to color: the blue dart frog. Its bright color warns predators that it is poisonous.

Looking for a fourth grade worksheet to help your kid with science? This printable will test his knowledge of the water cycle.

Think toads and frogs are the same? Think again! Check out this breakdown of the differences between the two, complete with a quiz to check your new knowledge.

Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

Discover the details of desert plant life in this informative worksheet!

Dip your toes into a marsh habitat in this second- and third-grade worksheet!

Discover the importance of butterflies in pollination with this informative worksheet!

Fact: This worksheet is about unusual animals from all over the world. Opinion: This is the best fact and opinion worksheet ever!

Explore a tropical rainforest habitat and its inhabitants with this engaging worksheet for third graders!

Discover what lives in the depths of the sea in this second- and third-grade habitat worksheet!

In this worksheet, students will read two different passages about the platypus. Kids will compare and contrast the passages, and identify the main ideas.

Help your 2nd grader write out fractions in this underwater adventure.

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

This packet of worksheets introduces children to food webs, an important life science concept.

Read about the small population of huge moose in Yellowstone National Park.

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

Whether you say buffalo or bison, it is still the largest land mammal in North America. Discover a bit more about this majestic animal.

Whoa, this spider is quite the spinster! He is actually one of many brand new species discovered between 2009 and 2011.

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

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

If your kid loves the ocean, he may enjoy learning tons of trivia about our fishy friends in the sea. Brush up on your fish facts with this fun page!

This nature coloring page features a detailed depiction of Hibiscus flowers and an African Mantis that your second grader can bring to life by adding color!