Why do dogs have whiskers? Here's why they are so important. – USA TODAY

Dogs are the most-preferred pet in the United States, according to a 2017-18 survey by the American Veterinary Medical Association. With the increasing number of dog owners in the country, educating oneself about pets helps to care for them the right way.
Canines have protruding stiff hairs from the side of their muzzles that resemble a human beard, but dog whiskers are much more complex in their functionality when compared to the stubble humans sport. Unlike human facial hair which marks the transition to adulthood, dogs have whiskers present even during their puppy days. So, what’s the reason behind dog whiskers?
According to PetMD, dogs have whiskers for sensory perception and conveying emotions. These special whiskers are called vibrissae or “feelers” and help dogs sense their surroundings by sending signals to the brain.
Vibrissae are deeply embedded in the skin around the muzzle and are high in touch-sensitive neurons. With the slightest pressure or vibration experienced, nerve impulses from the dog whiskers’ follicles are immediately sent to the brain. These feelers help dogs in sensing the size, shape and speed of objects near them based on the movement of air currents, explains the American Kennel Club.
Dog whiskers are present in different areas of the head, and each have specific functionalities, PetMD reports.
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Since the whiskers of a dog are vital in understanding their surroundings, having balance and sensing direction, PetMD recommends that dog owners shouldn’t trim their pooches’ whiskers.
If you cut your dog’s whiskers accidentally, it won’t hurt, and they will grow back. However, from an animal welfare point of view, plucking or trimming dog whiskers is considered equivalent to amputating a functioning sensory organ, PetMD says.
Removal of dog whiskers can cause stress, disorientation and temporary disruption in daily activities of the canine.
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According to PetMD, all dogs have whiskers including hairless and curly breeds. Although the size and number may vary depending, all dogs grow whiskers and help with sensory perception.

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