Vital Essential's freeze-dried Pig Ears undergo a slow 48-hr freeze-drying process that locks in all the nutrients while maintaining the integrity of this great chew, a great source of hydroxyproline (an essential in collagen and cartilage) which helps support healthy joints. These beauties are big and delicious, without being brittle or needing to have a "greasy" coating to make them appealing. They're a thing of beauty all on their own. We can hear your dog calling for them now. Better get to the bar...VE RAW BAR, that is.