Emerald Pet Twizzies all natural chews are made in the USA using US ingredients and proteins. Each of our Twizzies chews are extruded through a proprietary process to ensure they are 100% digestible. This process allows the stomach to digest our chews fully and creates a safe alternative to body part based chews, rawhide and other hard to digest products. The limited ingredient formulas are free of common food allergens like wheat, corn, dairy and soy. In addition, Twizzies do not contain grain, gluten, sugars, sweeteners, or any other fillers. High protein levels from the high meat content assures you are feeding only the best to your dogs. Chicky Twizzies are made using lean chicken.