Hairy beasts' jaws (4)

I believe the answer is:

yaks

This clue is a double definition.

'hairy beasts'' is the first definition.
(I've seen this in another clue)

'jaws' is the second definition.
(I've seen this in another clue)

(Other definitions for yaks that I've seen before include "Tibetan oxen" , "Rabbits" , "Wild oxen of Tibet" , "animals" .)

I've seen this clue in The Everyman puzzle in The Observer.

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