Chili loves his pig ears. He tosses em around, plays with em, hides them around the house, buries them in backyard, and of course eats them. But then it dawned on me, how do I know if they are safe? anyone have thoughts on any risks associated with pig ears as a treat? I used to buy them at costco. now I order them from amazon. any brand better? any brand to stay away from? any better alternative?