Reptiles and amphibians are two distinct groups of animals that share some similarities but also have many differences. Both are cold-blooded vertebrates, meaning they have a backbone, and are ectothermic, meaning they rely on external sources to regulate their body temperature. However, there are several key characteristics that set these two groups apart.
Reptiles include animals such as snakes, lizards, turtles, and crocodiles. They are known for their scaly skin, which helps them retain moisture and protect them from the environment. Most reptiles lay eggs on land and have a tough outer shell to protect the developing embryo. They also have lungs for breathing air and a three-chambered heart.
Amphibians, on the other hand, include animals such as frogs, toads, salamanders, and newts. They have smooth skin that is moist and permeable to allow for gas exchange. Unlike reptiles, most amphibians lay eggs in water or in moist environments. They also undergo metamorphosis from a larval stage with gills to an adult stage with lungs.
One of the main differences between reptiles and amphibians is their habitat preference. Reptiles are mostly found on land or in dry environments while amphibians require moisture.