Soft mutation of pig.

"Never judge a book by its cover", literally "One doesn't buy a woodcook according to its beak", deriving from the practice of selling woodcocks in a closed bag with only the long beak poking out being visible.

"Never judge a book by its cover", literally "One doesn't measure a woodcook according to its beak", deriving from the practice of selling woodcocks in a closed bag with only the long beak poking out being visible.