The animal kingdom is divided into smaller groups called vertebrates and invertebrates. Vertebrates are those animals with backbones and endoskeletons and invertebrates lack a backbone and generally have the skeleton on the outside of their bodies.
There are many python species - including... Burmese Pythons, Reticulated Pythons, Royal Pythons, Carpet Pythons, Childrens Pythons, Blood Pythons, & Indian Pythons
No there is more with backbones
Australia. They are small pythons related to Children's pythons (named for the man that discovered them, nothing to do with kids), Anthill pythons, Spotted pythons, and others.
Pigs do have backbones.
No backbones
it has 2 backbones
All snakes have backbones.
all fishes have backbones
The backbones are part of the skeleton.
no they don't have backbones
no myriapods don't have backbones