Amphibians lay eggs in water and are cold-blooded vertebrates with smooth skin and no scales. Baby amphibians live in water, breathe through gills, and undergo metamorphosis to grow legs and lungs as adults able to live on land or in water. Examples of amphibians are frogs, salamanders, and toads; frogs start as tadpoles with tails and through developmental stages grow into four-legged frogs that leave the water.

1. AMPHIBIANS

2. Amphibians lay eggs in the water.
Amphibians are oviparous.

3. Amphibians are vertebrates.
FROG’S SKELETON
SALAMANDER’S SKELETON.

4. Amphibians have smooth skin.
They haven’t got scales.

5. Amphibians live in water and on
land.

6. Amphibians are ccoolldd--bbllooooddeedd..

7. Baby amphibians live and grow in water
and breathe through their gills.
gills

8. Adult amphibians breathe with
their lungs.

9. A salamander is an amphibian.

10. A toad is an amphibian.

11. A frog is an
amphibian.

12. Life Cycle of a Frog

13. Metamorphosis: baby amphibians
change and grow into adult
amphibians.

14. 1. Frogs lay lots of eggs in the water.

15. 2. Little tadpoles come out of the egg.
They have a tail, but no legs.

16. 3. Two back legs grow.

17. 4. Two front legs grow.

18. 5. The tail becomes smaller.

19. 6. Adult Frog comes out of the water.
The tail disappears. The frog can live on land.