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

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.

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.

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.

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.

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

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

Here's a creature that can be a heard a mile away: a thick-billed parrot. Learn more about these birds that are the only parrots native to the USA.

How long does a butterfly live? Find out with this worksheet! Give your second grader a fun way to practice making graphs using given information.

Learn about the animal practice of hibernation in this quick science worksheet.

Pick up some facts about squids, including about the fascinating Giant Squid, and do a bit of writing on this reading comprehension worksheet.

Sandy the bee is going to a party tonight. Encourage your 2nd grader to help him get there on time by drawing hands on the clock for him.

Did you know chameleons can sleep upside-down? Learn more about chameleons with this fun worksheet, jam-packed with fun facts and activities!

Dreams can be delightful or downright terrifying. Discover the science behind dreams and try to figure out what your dreams say about you.

Did you know you're 1,000 times more likely to drown than you are to be bitten by a shark? This fun worksheet is jam-packed with fun facts about the shark!

Animals need to adapt to survive! Teach your child how some animals can blend with their surroundings using camouflage.

Children get to know animals of South America in this nature-themed worksheet.

Get all the Tasmanian devil facts on this worksheet, from what they eat to how they got their name.

How much do you know about the U.S. national bird? Learn all about the bald eagle with this fun, informative worksheet!

Grandma and grandpa didn't always have gray hair. Find out about what gives our hair color and what makes our hair lose that color as we get older.

Help your child learn about facts and opinions in this animal-themed worksheet! Students will read sentences and decide whether they express facts or opinions.

Hop this way for some marsupial madness! Your child can learn about the life cycle of a kangaroo, and how marsupials differ from mammals.