They have hair, a skelaton, 4 limbs, circulatory system w/4 chambered heart, and are endothermic
The head muscles of turtle are homologous in mammals.
The common ancestor of mammals and birds was a reptile.
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.
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.
Scientists can tell Megatheriums were mammals by examining their skeletal features, which show characteristics common to mammals such as specialized teeth, a jaw structure adapted for chewing, and a reproductive system unique to mammals. Additionally, the presence of hair or fur impressions in some preserved specimens further supports the idea that Megatheriums were mammals.
Reptiles
They are both mammals...........................................................................................................thats it.
they r both mammals.
Both birds and mammals care for their young.
1. Both are warmblooded vertebrates. 2. Both are amniotes. 3. Both have their bodies covered with silky structures made from keratin.
It is rephrased as mammals are homeothermic animals .
They are mammals