Tasman's Natural Pet Buffalo chews are great for chewing.  They are long lasting, flavorful and naturally processed without the use of chemicals. Each chew is crafted using bison which is sourced from the USA and is naturally raised used without the use of antibiotics or growth hormones. The high quality bison is acquired from USDA or State Inspected facilities.  Bisonhide is a great option for dogs with allergies to Beef.  Tasman's chews are all natural and contain No harmful chemicals, hormones or antibiotics.