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Animals can be deprived of their whisker sense for a period of weeks by whisker trimming (they soon grow back), or for the duration of an experimental trial by restraining the whiskers with a flexible cover like a mask (the latter technique is used, in particular, in studies of marine mammals [30]).
A dog's whiskers. Dogs have specialized whiskers known as vibrissae, sensing organs present above the dog's eyes, below their jaw, and on their muzzle. Vibrissae are more rigid, embedded much more deeply in the skin than other hairs, and have a greater number of receptor cells at their base.
The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf.Also called the domestic dog, it was selectively bred from an extinct population of wolves during the Late Pleistocene by hunter-gatherers.
The parts of the head are the nose, muzzle, stop, forehead or braincase, occiput (highest point of the skull at the back of the head), ears, eyes, eyebrows or brows, whiskers, flews (lips, which may hang down), and cheeks. Dog heads are of three basic shapes: [4] Apple-headed refers to a dog's head that is round on top, not flat.
Westies have a rough outer coat that can grow to about 2 inches (5.1 cm) long [3] and a soft, dense, thick undercoat. [2] The fur fills out the face to give it a rounded appearance. [2] As puppies develop into adults, their coarse outer coat is normally removed by either "hand-stripping" (especially for dog-showing) or otherwise clipping. [2]
They developed and are used primarily for firmly holding food in order to tear it apart, and occasionally as weapons. They are often the largest teeth in a mammal's mouth. Individuals of most species that develop them normally have four, two in the upper jaw and two in the lower, separated within each jaw by incisors; humans and dogs are examples.
The whiskers on the muzzle, known as mystacial vibrissae, average 100–110 millimetres (3 + 7 ⁄ 8 – 4 + 3 ⁄ 8 inches) long, while the whiskers everywhere else on the head average to be shorter in length. Whiskers (carpal vibrissae) are also on the forelimbs and average 40 mm (1 + 5 ⁄ 8 in) long, pointing downward and backward. [2]
During puberty, the first facial hair to appear tends to grow at the corners of the upper lip (age 10–14). It then spreads to form a moustache over the entire upper lip (age 14–16). This is followed by the appearance of hair on the upper part of the cheeks and the area under the lower lip (age 14–17).