Fish 31,000 species
Cold-blooded
Most lay eggs
Examples, Snapper, Goldfish etc
Amphibians ( 7,000 species)
Lay eggs in water
Larvae breath with gills
Cold-blooded
Examples poison dart frogs, Diplocaulus etc
Reptile (10,000 species )
Cold - blooded
Lays eggs
Dry, Scaly skin
Examples: Turtle, Lizard, Snake

Bird (5,000 species)
Covered in feathers
Warm - blooded
Have Wings
Examples: Sparrow, Penguin, Owl
Mammal (5,000 species)
Covered in hair or fur
Warm-blooded
Feed young on milk
Examples: Bat, Bear, Deer