How are mammals the same as vertebrates?

Answer 1

All mammals have a spine or a backbone. Another word for a backbone is a "vertebra" and thus all mammals are "vertebrates".

However the presence of a backbone does not DEFINE a mammal because other animals also have backbones, eg reptiles, birds and fish - these animals are also "vertebrates".

Mammals are mammals because they are the onlyanimals to have fur/hair and feed their young on milk (there are some exceptions of non-mammals with fur and who feed milk to their young, not not many).

The reason for all these animals being "vertebrates" is because a long time ago in geological history they all evolved from an animal that had a backbone.

Answer 2

The defining characteristic of a mammal is that it feeds its young on mothers' milk. This is the case whether the mammals is a placental, a marsupial or a monotreme (egg-laying mammal).

Answer 3

Mammals have a more complex nervous system over other vertibrits and a larger brain size in comparison to body ratio than other vertibrits. Mammals birth thier young alive and produce milk for them.

Answer 4

All mammals are vertebrates (meaning they all have a backbone).

Answer 5

Birds are vertebrates as they have a spine and an internal skeleton.

Answer 6

because it has back bones

Answer 7

Breathe air with lungs