Best Bully Sticks 100% Natural Cow Ear Dog Treats (15 Pack) 100% Beef: Sourced from Free-Range, Grass-Fed Cattle: Minimally Processed: Simply dried then washed Low-fat Dog Chew: Suitable for all Dogs Natural Alternative to Rawhide: No Chemicals, Additives or Preservatives. Fully-digestible Dog Chew: Single Ingredient and Easy to Digest.