Paw pads are thick fat and connective tissue used to bear the weight of the animal. The outer surface is the toughest and thickest skin on the body. it has all five epidermal layers, but the stratum corneum (the outermost layer) is the thickest. Usually the paw pads are made up of the carpal pads, the metacarpal and metatarsal pads, and the digital pads. Usually the pad also has exocrine sweat glands and lamellar corpuscles.