Vertebrates include fish, amphibians, reptiles, birds and mammals, analyze the common characteristics of reptiles and explain how they differ from mammals. Explain your answer in one to two sentences.
1 answer
Reptiles share common characteristics such as having scales, laying eggs, and being ectothermic (relying on external sources of heat to regulate body temperature). They differ from mammals in that they do not have mammary glands to produce milk for their young, and they typically have a more simple circulatory system with three-chambered hearts, compared to mammals' four-chambered hearts.