Characteristics of fish
characteristics of mammals
Characteristics of reptiles
Characteristics of amphibians
Characteristics of birds
They are oviparous, live both on land and in water, cold-blood, and their skin is covered with thick and hard scales.
Reptile
They are oviparous, warm-blood, their skin are covered with feathers, use their beak for feeding.
Mammal
They are viviparous and have hair/fur, warm-blood, feed with milk and breathe through lungs.
Bird
They are oviparous, cold-blood, they have skin that is moist and bare, live in water when they are babies and live on land when they are adults, breathe through gills when they live in water and with lungs when they live on land.
Fish
Amphibian
They are oviparous, live in water, cold-blood, they have fins to move and gills to breathe and their skin are covered with scales.