Life Cycle of the Frog

By JackieGrade 2

Boundary Street Elementary

What are the stages of growth for the frog?

• Egg• Tadpole

• Young adult• Frog

Stage OneEggs

• The adult female lays eggs in the water.

• The eggs are small and are protected by a thick, clear, jelly-like substance.

• The eggs are laid in clusters.

Pictures from How Do Frogs Grow?Judy Nayer

Newbridge Discovery Links

Stage TwoTadpoles

• Tadpoles hatch from the eggs.

• Tadpoles live in water and eat water plants.

• Tadpoles store fat in their tails.

• They breath with gills.• Tadpoles begin to

grow hind legs.

Pictures from How Do Frogs Grow?Judy Nayer

Newbridge Discovery Links

Stage ThreeYoung Adult

• The tadpole’s tail becomes shorter as the hind legs grow longer.

• Front legs begin to appear.

• Lungs form and gills begin to disappear.

• When the tail is almost gone, the tadpole has become a frog.

Pictures from How Do Frogs Grow?Judy Nayer

Newbridge Discovery Links

Stage FourAdult Frog

• The adult frog lives on land.

• It breathes through lungs.

• Its tail has completely disappeared.

• The adult frog eats insects.

Pictures from How Do Frogs Grow?Judy Nayer

Newbridge Discovery Links

Frog Facts• Frogs belong to the amphibian animal group.• They are able to live in most any environment, except in

Antarctica and the driest deserts.• The most common environments are moist, tropical areas.• Frogs have smooth, moist skin; bulging eyes; and eternal

eardrums.• Long hind legs help frogs make long leaps.• Webbed feet also help frogs to become excellent swimmers.• A frog’s tongue is attached at the front of the mouth and is

covered with a sticky substance.

Frog Facts• They have teeth in the upper jaw, but not in the lower.• Frogs breathe air, but are able to stay under water for long periods of

time. They can also breathe through their skin.• Frogs like to eat insects, worms, and centipedes. Some frogs also eat

other frogs, tadpoles small fish, mice and small snakes.• The largest frog in North America is the bullfrog. It can be 18 inches

long and weigh 1.2 pounds.• The largest frog in the world is the African Giant frog. It can be 26

inches long and weigh 10 pounds.• Frogs help people by eating pesky insects. They are also used for food

and research in labs.

Resources• Microsoft Encarta Encyclopedia 99• Carson Delosa Life Cycle of the Frog poster• www.webshots.com• ???Book