No. Mussels are molluscs and molluscs are invertebrate animals. Invertebrates do not have backbones.
No there is more with backbones
No backbones
Pigs do have 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
Mussels are shellfish, not rabbits. I would suggest not feeding mussels leaves.
All dinosaurs had backbones.