What are 3 vertebrates, give an example

Vertebrates are animals that have a backbone/spinal column. Some examples are mammals, birds, fishes, and many more

vertebrates:

an animal group that has spinal cord or vertebral column or back bone ...

3 vertebrates:

these are

1 reptiles

2 fishes

3 amphibians

examples:

birds, humans, mammals, reptiles, fishes, amphibians ...