well insects don't have backbones.they have exoskeletons thats. Cockroaches for example dont have back bones.Thats why when you squish them there is a crunch sound
They must. If I am wearing a pair of high heels or flats with a thin leather sole I can feel something breaking up under my shoe. I hate cockroaches so if I am smushing up bones I think that's sorta funny.
No there is more with backbones
Pigs do have backbones.
it has 2 backbones
No 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