Use This information to pick out the appropriate dimension to your Doggy. Evaluate throughout widest Portion of the paw when bearing weight. If between dimensions, sizing down. Pet dogs may have more substantial front paws than rear paws - measure all paws. Below at the Hatchbag Corporation, our boot liners https://www.wanderlustprogear.com/products/4pcs-set-waterproof-pet-dog-shoes-anti-slip-rain-boots-for-small-cat-dogs-foot-cover-footwear-puppy-booties-pet-paw-accessories