Is arctic fox a noun

Yes, the term 'Arctic fox' is a noun, a Word for a type of animal; a Word for a thing.

The noun 'Arctic fox' is a compound noun, a Word made up of two or more Words that form a noun with a meaning of its own.

The compound noun 'Arctic fox' is made up of the common noun 'fox' modified by the attributive, proper noun'Arctic'

Although the noun 'Arctic fox' is a common noun, a general Word for any individual of this species, the noun 'Arctic' is capitalized as a proper noun, the name of a specific region of Earth.