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Use the information on these pages to help you identify Wisconsin's frogs by their markings and their call. Hear the call of each of Wisconsin's frog species. You can also identify frogs by the time of year they call. Frogs on this list are in order of when each of them first start to call in the spring.

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DK Find Out! | Fun Facts for Kids on Animals, Earth, History and more!

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Visit DK Find Out! to learn about dinosaurs, space, animals, nature & more. Fun learning activities for kids with videos, quizzes & galleries at DKFindOut.com

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Frog Jumps Caught in Slow-Motion | National Geographic

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Facts About Frogs. A Kids video book about frogs. Learn How to get free kindle Kids books directly from Amazon at http://AReadingPlace.com/frogs. This is adapted from the book: Children's book on frogs: A Kids Picture book about frogs with Photos and fun Facts. This book is available at Amazon at: http://www.amazon.com/Childrens-Book-About-Frogs-ebook/dp/B00G2A1EVQ/.

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Whether it's a bright blue poison dart frog or a brown, warty toad, a frog's survival is all about water. Most frogs begin their lives as jelly-like eggs that need moisture to develop. The eggs hatch into aquatic tadpoles, which breathe through gills. As the tadpoles grow, they develop lungs and gain the ability to breathe air.

But frogs' need for water doesn't dry up once they're on land. Frogs get virtually all of their water and part of their oxygen through their skin, and this process only works if their skin stays moist. If a frog's skin dries out, it can't get enough oxygen or get rid of enough carbon dioxide, and it dies.

So it should come as no surprise that frogs have developed some interesting adaptations to cope with their lifelong need for water. For example, gastric brooding frogs, which are now extinct, swallowed their eggs. They stopped eating and digesting food while their young developed in their stomachs instead of in water. The baby frogs then exited through their parent's mouth. Strawberry poison dart frogs, which live in Central America and Puerto Rico, lay their eggs on land, and males keep them moist with urine. Once the eggs hatch, the mother carries each tadpole on her back to its own tiny pool of water that has collected between the stem and leaves of a plant. While the tadpoles grow, their mother feeds them her own eggs.

But frogs' adaptations aren't all about water or reproduction. They've lived on Earth for about 200 million years, and in that time they've developed everything from deadly toxins to the ability to survive being frozen. You'll learn about these and other adaptations in this article. We'll start with a look at frogs' appearance and behavior, including why toads are frogs, but not all frogs are toads and why frogs molt but don't leave the skin they shed behind.

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Whether it's a bright blue poison dart frog or a brown, warty toad, a frog's survival is all about water. Most frogs begin their lives as jelly-like eggs that need moisture to develop. The eggs hatch into aquatic tadpoles, which breathe through gills. As the tadpoles grow, they develop lungs and gain the ability to breathe air.

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Frogs are amphibians, a class of animals best known for living in both water and land. Amphibians have no hair or scales, and generally reproduce by laying eggs under water. Unlike warm-blooded humans, amphibians are cold-blooded, meaning their temperature changes based on the temperature of their surroundings. Here are some facts and stats about the amazing, amphibious frog.

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Frogs: The Thin Green Line | Infographic: All About Frogs | Nature | PBS

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Frogs are amphibians, a class of animals best known for living in both water and land. Amphibians have no hair or scales, and generally reproduce by laying eggs under water. Unlike warm-blooded humans, amphibians are cold-blooded, meaning their temperature changes based on the temperature of their surroundings.