The best natural dog treats, bully sticks 100% high-quality guaranteed. Bully sticks are made from dried bull penises also know as bull pizzle, which is dried and tenderized. Bully sticks for dogs and puppies come in various sizes and widths: small bully sticks, standard bully sticks, jumbo bully sticks, and monster bully sticks. Bully sticks for large dogs tend to be longer and thicker than the ones for small breeds of dogs. The sticks for large breeds may be even thicker still. Sizes can range from a length of 6 inches to 12 inches, and can weigh between .5 ounces to 3 1/2 ounces. The average weighs around .75 ounce per inch of the length.