AMPHIBIANS

By JAIRO, PAU and JAVI

CHARACTERISTICS• VERTEBRATE TERRESTRIAL ANIMALS

• FOUR LIMBS

• STRONG BACK LEGS

• MOIST SKIN WITHOUT COVERING

• THEY DO METAMORPHOSIS

FUNCTIONS• COLD-BLOODED. THEY LIVE IN WARM PLACES

• LUNGS AND SKIN TO BREATH. TADPOLES USE GILLS

• CARNIVORES. IN TADPOLE STAGE, THEY’RE HERBIVORES

• OVIPAROUS. SALAMANDERS ARE OVOVIVIPAROUS.

FERTILISATION EXTERNAL OR INTERNAL

METAMORPHOSIS: FROG

1. FEMALE LAYS EGGS IN

THE WATER AND MALE 2. A TADPOLE WITH GILLS AND

FERTILISES THEM TAIL EMERGES FROM THE EGG

3. THE TAIL AND GILLS 4. THE ADULT FROG IS TERRESTRIAL

DISAPPEAR. LEGS DEVELOP NOW IT HAS LUNGS AND FOUR LEGS

CURIOSITIES• THE FROG FLEA IS SMALLER THAN A FINGERNAIL!

• THE JAPANESE GIANT SALAMANDER IS 1’5M. LONG AND WEIGHS

UP TO 25 KG.

• THE ALPINE BLACK SALAMANDER HAS THE LONGEST

PREGNANCY OF ALL ANIMALS: 3 YEARS AND 2 MONTHS!

BIBLIOGRAPHY

1. NATURAL SCIENCE

BOOK

2. GOOGLE IMAGES

3. antonioylosamfibios