Size Guide:

Small: Dogs 5-25lbs, Breeds like Frenchies, Pugs, and mini breed mixes.

Large: Dogs 25-75lbs, Breeds like Labs, Shepherds, and Poodle mixes.

X-Large: Dogs 75lbs , Breeds like Bernese Mountain Dogs and Mastiffs.

Superchewers - order one size up for greater durability.