Mine has always been the kind that "dig" on their heads…ggg but usually only in the house in their beds.... sometimes.. and this was a clue to Kristii's corn/oat allergy... that after eating she would run and dig like crazy.. standing on her head....
And as far as her tail... how old is she? Depends on the breeding... some will bush out like a fox as they age... especially after being spayed/neutered... they seem to grow a longer/harder under coat...
My Kristii on the other hand... has always since birth been our "hairless" girl... she never has much hair even when blowing coat... she will get blond hairs behind her ears but that is about it.. and never an undercoat....