Answer:
Chordata is a member of the classification level phylum (just beneath kingdom) and essentially means "vertebrates," so yes, ferrets do fall under the chordata category.

The short version of the classification of ferrets follows:

Kingdom Animalia (Animals)
Phylum Chordata (Vertebrates)
Class Mammalia (Mammals)
Order Carnivora (Carnivores)
Family Mustelidae (Mustelids)*
Genus Mustela (Weasels)**
Species M. putorius (European polecats)
Subspecies M. p. furo (Domestic ferret)

*The mustelid family includes otters, badgers, and weasels, and was once thought to include skunks.

**The weasel genus includes weasels and similar creatures such as polecats, certain minks, stoats, ermines, and ferrets.
Contributor: Chris
First answer by Chris Rhodes. Last edit by Chris Rhodes. Contributor trust: 29 [recommend contributor recommended]. Question popularity: 2 [recommend question].