Anthropods do have backbones but arthropods do not. The presence of a backbone implies chordate phylum membership; by contrast, arthropods have their skeletons on the outside (exoskeleton).
Note that the term 'anthropod' should not be confused with 'arthropod' - anthropod is not a phylum nor taxon but is a general term meaning human or humanoid.
No. Crawfish, or crayfish, are crustaceans. They are related to and like lobsters, crabs, shrimp, and barnacles.
Yes
with their mouth i think
No there is more with backbones
ants are anthropods
no
No backbones
Pigs do have backbones.
it has 2 backbones
All snakes have backbones.
all fishes have backbones
no they don't have backbones