Pig ears are blanched in boiling water and then dipped into an ice water bath - this helps removes the hair. The ears are then baked at a low temperature. There are no additives, preservatives, or chemicals used in the manufacturing process - this is an all natural treat! It's a very palatable chew, so it's a great recommendation for picky dogs. This treat is higher in fat (compared to low-fat chews like bully sticks), so it's not appropriate for dogs who need to lose weight or have a metabolic disease such as pancreatitis.