Select the vertebrate.

 - common octopus
 - turkey vulture
 - hissing cockroach
 - praying mantis
Like other octopuses, a common octopus is an invertebrate. It does not have a backbone. It has a soft body.
A praying mantis is an insect. Like other insects, a praying mantis is an invertebrate. It does not have a backbone. It has an exoskeleton.
A turkey vulture is a bird. Like other birds, a turkey vulture is a vertebrate. It has a backbone.
A hissing cockroach is an insect. Like other insects, a hissing cockroach is an invertebrate. It does not have a backbone. It has an exoskeleton.