BACK TO THE STANDARD EXPLANATIONS
The standard provides:
TAIL: set on relatively high, bushy, with abundant coat. At rest, it is carried low, straight or slightly sabre-like, reaching to the hock. When the dog is alert or in action, tail is carried upwards and can be even higher than the topline but never lying on nor curled over the back.
At rest, it is carried low, straight:
Or slightly sabre-like, reaching to the hock:
When the dog is alert or in action, tail is carried upwards and can be even higher than the topline:
FAULTS: never lying on nor curled over the back.