Matthew 7:6
"Do not offer sacred things to dogs, and do not throw your pearls in front of [wild] pigs [i.e., to those who will not appreciate them], because they will probably trample on them with their feet and then turn around and attack you.
Luke 8:33
Then the evil spirits went out of the man and entered the hogs. The herd [immediately] rushed down the cliff into the lake and was drowned.
Luke 15:15
So, he went to work for one of the citizens of that country who sent him to his fields to feed his hogs.
2 Peter 2:18-22
[Although] their talk is big, what they say is worthless, and by [offering people] fleshly desires [i.e., sexual gratification], they lead people astray, who are barely escaping from the error of the world.