Find out the features of the complication of the organization of mammals in comparison with reptiles?

Mammals and reptiles are vertebrates. Man belongs to mammals. There are many similarities between these groups of animals. But in the course of evolution, there have been significant changes. Mammalian skin is soft and contains various glands. Mammals, unlike reptiles, are warm-blooded animals. This means that they are able to maintain a constant body temperature. The heart of mammals is four-chambered, and in reptiles it is three-chambered. Also, there are differences in the structure of other organs and organ systems.