Mammals have hair or fur. They feed milk to their young. Mammals are vertebrates and they are warm- blooded.
Reptiles are cold-blooded and have dry scaly skin. Most reptiles lay eggs. They also have a endoskeleton.
Instead of lungs fish have gills to help them breathe. Most fish give birth in eggs. Most fish are cold-blooded, also fish are aquatic vertebrates.
What makes birds so special is that they have wings that help fly! Birds also give birth to babies in hard shelled eggs. Our last fact about birds is that they have lungs and are warm- blooded.
Something cool about amphibians is that they cab live on land and water! Some examples are a frog, a newt, a salamander.Another cool fact is that most amphibians give birth to babies by laying eggs. Our last fact is that amphibians are cold- blooded.