Answer:
Similarities
Both mammals and reptiles are considered vertebrates, meaning they both have backbones. Also, they both need and have several of the same organs in their body. Lungs, found in both, are used for breathing, and even though it has a different number of chambers, both have a heart.
Differences
Mammals have hair all over their bodies, while reptiles have scales. Mammals have live births and produce milk for their young, while reptiles lay eggs. Reptiles have only three-chambered hearts, mammals have four. ... Mammals, on the other hand, stop growing at adulthood and will only produce two sets of teeth.
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