Yes, they do.
Yes, they do because they are vertabrates and all vertabrates have a backbone.
Yes, in fact, since they are vertabrates (all vertabrates have backbones) they must have a backbone.
Lizards and all other reptiles are vertabrates. Vertabrates are animals that have backbones.
Anything with a backbone. You are a vertebrate, as are all mammals.
Yes. All fish are vertabrates.
As elephants are mammals, and all mammals are vertabrates (ie. they have a backbone), then yes, they do indeed have a backbone.
yes since eagles are birds and birds are vertabrates and vertabrates have backbones, eagles have backbones.
Do ducks have backbone Yes, ducks have a backbone. All vertabrates do.
Yes, all mammals are vertabrates (animal with a backbone).
Vertebrate means backbone, spine. Orcas have spines, which makes them vertebrates.
Yes, as all birds are vertabrates.
Yes. All parrots are birds; all birds are vertebrates; and all vertebrates have a backbone.