Canine Skin

 Compared with the human skin, although in both cases there exist three layers (epidermis, dermis and hypodermis), at level of the epidermis significant differences exist between the skin of the dog and that of the human. This way, in the canine skin they exist from 3 to 5 cellular layers and their renovation capacity is of about 20 days, while in that of the human there are some 10 to 15 cellular layers and they take in being renewed about 28 days. 

95% of the canine skin is recovered of hair and this grows in a recurrent way. In the human is only covered with hair in 5% and the growth is continuous. This recurrent growth of the hair in the dog causes two changes a year (spring and autumn); although in the dogs of domestic habitats a continuous change can be observed. 

The pH of the canine skin is more basic than that of the human one, oscillating between the 5.5 and the 7.2. 

In the dogs, the glands sudoríparas don't have a regularity function of corporal temperature as in the man. The elimination of the heat carries out it fundamentally by means of the breathing. Another great difference of the canine skin is that its glands sudoríparas hardly segregate water and salts to the exterior.