Meet the red wolf, an endangered species of animal that was once very common, but in the past 50 year nearly became extinct!

Learners will get to know the bald eagle, the national bird of the United States and an inhabitant of Yellowstone National Park.

Learn about the black bears of Yellowstone National Park.

Learn about the badgers that live in Yellowstone National Park.

Learn about the Uinta ground squirrels of Yellowstone National Park.

Learn about the grizzly bears that live in Yellowstone National Park.

Children will learn important facts about food chains in these worksheets.

Learn about the amphibians and reptiles of Yellowstone National Park.

Learn the importance of natural adaptations with this inquisitive activity!

Learn a bit about the Brazilian rainbow boa with this cool science worksheet.

Learn how seeds move with this second- and third-grade matching activity!

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

Learn about the life cycle of a tomato plant in this worksheet for second and third graders!

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

Learn about the second fastest land mammal in the Western Hemisphere, the pronghorn antelope.

Learn the ins and outs of one of the body's most important organs: the heart!

Learn about bison, some of biggest creatures in Yellowstone National Park, or anywhere else for that matter.

This nonfiction passage helps kids develop reading comprehension skills, as well as learn important ecological facts.

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

Learn about the plants and animals that make deciduous forests their home, then complete the crossword puzzle.

Learn about Yellowstone Park's lynx, the cats that put your average house cat to shame.

Learn about the life cycle of a wood frog in this second- and third-grade worksheet!

Learn more about two kinds of aquatic biomesÃfreshwater and saltwater biomesÃand how you can tell them apart.

The food chain is an important life science concept for fouth graders. This game makes it fun to learn!

Learn the difference between behavioral and physical adaptations with this cut-and-paste worksheet for second and third graders!

Color in the gold and red colors of this common grasshopper species and learn about insect orders with your child!

Learn to identify and name the parts of a seed in this two-page science worksheet and quiz!

Wolves are an animal with a bit of rough past in Yellowstone National Park. Learn all about them!

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

Budding biologists can learn all about human digestion with this information page, complete with a diagram of the digestive system.