Hair
Hair is made of the protein keratin and dead epidermal or skin cells and
it grows from follicles in the dermis or inner layer of the skin. Some hair
is densely packed, depending on species and location on the body may become
horns, fingernails or toenails.
Each follicle has an sebaceous (Oil) gland to keep skin and hair smooth
and elastic. The Westie like most dogs has three types of hair, soft downy
undercoat, stiffer and often longer guard hairs that form a protective layer
to protect undercoat and skin from harsh weather and whiskers that grow in
clumps on the face.
The dogs hair grow in cycles, when it reaches a certain length it stops
growing and dies, this is when shedding starts. During the shedding period
your Westie might get very itchy, so its important to brush the coat to
remove this hair.
While some people say that shedding is linked to seasonal temperatures and
others quote photoperiods or day length, there is a variation with dogs
living outside who may shed heavy during spring, while your Westie lives in
your home and sheds a little all year, the loss of any winter under coat
does help stay cooler in hot weather.
Female dogs often drop their coats after a heat cycle.
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