because it helps you stand walk sit and other physical movments
No there is more with backbones
Pigs do have backbones.
No backbones
it has 2 backbones
All snakes have backbones.
Yes, they do.
no myriapods don't have backbones
all fishes have backbones
The backbones are part of the skeleton.
no they don't have backbones
All dinosaurs had backbones.
All snakes have backbones.