A fox is already a vertebrate as it has a spine.
The gray fox is a vertebrate.
A fox is a vertebrate in the mammal classification.
The red fox is a vertebrate as are all mammals.
Vertebrate.
A fox is a vertebrate. Any animal with bones is a vertebrate, i.e., the fox. An invertabrate, for example, would be the starfish.
Any fox is a vertebrate. So the answer to your question is vertebrate. In order for an animal to be a vertabrate it has to have vertebrae, and vertabrae are pretty much back bones.
A speckled flying fox is most defiantly a vertebrate. All mammals are vertebrates being a part of the phylum chordata.
It is a vertebrate.
Because it has a spine.
amphibian
All foxes are vertebrates. That means they have a skeleton with a spine or backbone.
Swift foxes are mammals.