USDA and FDA certified, and from Free Ranging South American Cattle, Spiral bullies are perfect for large and small dogs. 100% digestible, low in fat, and high in protein, they provide plenty of chew time for larger dogs and last extra long when used with small dogs. They are a great choice for an all-natural chew. Any bully will clean teeth and gums because of the chewing action required to eat the stick. This is a natural product so thickness, shape and color may slighty vary.