Mammary glands and the presence of a neocortex
Fur and mammary glands (in females).
Two notable features that mammals have in common are that they all give birth to live young and they all have hair. Another thing that most mammals have in common is that the females make milk to feed their young.
The head muscles of turtle are homologous in mammals.
Cradle Mountain.
mercury is a fun planet
Reptiles
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Uranus has a blue-green color as does Neptune
There are many such features, including: 1. Mammals nourish their young with milk. 2. Mammals are warm-blooded. 3. Mammals have fur. 4. Mammals have a four-chambered heart. 5. Mammals are amniotes. 6. Mammals breathe oxygen. 7. Mammals have three middle ear bones and a neocortex. 8. Mammals have internal reproduction. Some of these characteristics are unique to mammals; others are found in some other vertebrates but not in all other vertebrates.
Mammals have several different external features that make them different from other animals. Some of these features include body hair or fur, external mammary glands, and warm-bloodedness.
mammals amphibians and reptiles birds
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