The standard provides:
HOCK: solid, firm, neither too high (indicating an accentuation of the stifle angulation) nor too low.

FAULTS:
too high (indicating an accentuation of the stifle angulation):

too low (COAT OF COW):
Little comparative illustrated analysis of the breed`s standard.
HOCK: solid, firm, neither too high (indicating an accentuation of the stifle angulation) nor too low.
FAULTS:
too high (indicating an accentuation of the stifle angulation):
too low (COAT OF COW):