Our large/giant breed dogs (not fat-shaming) land harder as they put more force magnifies the force.Dogs with a lot of coat, such as Newfies, Great Pyrenees, and Tibetan Mastiffs, don't usually have as many elbow callus issues as shorter coated breeds. All that luscious coat softens the blow of the elbow against the ground.In warmer areas hard surfaces are usually cooler for big dogs, creating a dilemma. Your Lab is hot and just wants to spread across the cool concrete of the patio. He doesn't care about his elbow calluses, he just wants to cool his belly.