After a Njerp fight I had my Companion skin and butcher the Njerp's dead dog. Usually, the pelt has a quality designation (decent, harsh, etc) but this pelt just said "Dog-skin". After I tanned it, the fur was described as 'Decent' but it's still just a "Dog Fur". I mention this because I'd earlier skinned a Njerp dog with my character and the skin had a proper quality designation. It may be that the Companion's effort causes this difference.