Mammals and amphibians are two distinct classes of animals that have several key differences.
Firstly, one of the most notable differences is their method of reproduction. Mammals primarily give live birth, with the exception of monotremes, which lay eggs. In contrast, amphibians, such as frogs and salamanders, typically reproduce by laying eggs in water, which then hatch into larvae before undergoing metamorphosis into adult forms.
Secondly, mammals are warm-blooded (endothermic), meaning they can regulate their body temperature internally. This allows them to maintain a constant body temperature regardless of the external environment. Amphibians, on the other hand, are cold-blooded (ectothermic) and rely on external environmental conditions to regulate their body temperature, making them more vulnerable to temperature changes.
Additionally, mammals possess fur or hair on their bodies, which helps with insulation and sensory functions, while amphibians typically have moist, permeable skin that allows for respiration and absorption of water, which is crucial for their survival in aquatic environments.
Furthermore, mammals have a more complex brain structure and a higher level of cognitive function compared to amphibians. This is reflected in their behaviors, social structures, and interactions with their environment.
In summary, the major differences between mammals and amphibians include their reproductive methods, body temperature regulation, skin characteristics, and cognitive abilities.