What is the main difference between a mammal and a reptile?
- Mammals have fur or hair, while reptiles have scales
- Mammals lay eggs, while reptiles give birth to live young
- Mammals are cold-blooded, while reptiles are warm-blooded
- Mammals live only in water, while reptiles live only on land
📝 Detailed explanation
Mammals are endothermic (warm-blooded) and typically have hair.Reptiles are ectothermic (cold-blooded) and have dry, scaly skin.