Arava Dead Sea Pet Spa - Guidance Booklet | Page 14

The Functions of the Pet Skin and Hair Coat
The skin and hair coat combined are the dog's largest sensory
organ, monitoring the environment and influencing body
temperature.
The skin has many important functions. It prevents desiccation
and dehydration, acts as a sensory organ, and is the receptor
for the perception of touch, pressure, vibration, heat, cold and
pain. It prevents trauma, protects against invasion of
microorganisms and noxious chemicals, and regulates
temperature changes within the body. It also acts as the site of
vitamin D synthesis. The subcutaneous tissues serve as a
reservoir for fat, electrolytes, water, carbohydrates and
proteins. Secretions from skin glands waterproof and lubricate
the skin and function as pheromones (substance secreted by
one individual that allows a second individual to recognize it).
Skin may reflect the state of health of the animal, as well as
indicate the presence of internal diseases.
The hair coat serves as an insulating layer between the dog's
skin and the external environment. It protects him from the
cold in winter, and the heat and sun in the summer. It also
serves as aggressive display, as when his "hackles rise" on the
back when the dog is threatened or frightened.