A PRIMITIVE HUNTING DOG

The word "primitive" describes those breeds of dog that may have been tamed (socialized to humans) but are still close in morphology (appearance) and behavior (hunting style) to the dogs of 15,000 years ago.

Being "tamed to humans" is not the same as "domestication," which is the deliberate and gradual modification by selective breeding of a wild species over many generations into a docile animal that follows the will of humans.

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A "primitive appearance" refers to "wild" characteristics:
...a nearly square body
...wedge-shaped head
...pointed muzzle
...oblique set eyes
...prick ears.