Vertebrae or spine.
Spine or the individual bones that make it up are called Vertebrae (singular: vertebra).
They have backbones/spines.
Spineless or more correctly an invertebrate.
Animals with backbones are known as vertibrates.
Invertebrates don't have backbones, that's what the name means.
Invertebrates are animals without backbones, such as worms, shellfish, and in almost all vertebrates, bone gives the skeleton its strength.
Just as the name implies, they are located dorsally.
No there is more with backbones
No backbones
Pigs do have backbones.
it has 2 backbones
Backbones