Click here to learn more.
Vetstreet. All rights reserved.
Vetstreet does not provide medical advice, diagnosis, or treatment. See Additional Information ›
Although cats and dogs clearly relish cleaning morsels of food off their whiskers, the long hairs have other purposes, from sensing things close to their face to communication.
When it comes to pet hair, whiskers are longer, thicker and more rigid, as well as more deeply embedded in the skin. Each whisker is rooted in a hair follicle that's filled with blood vessels and nerves. And like other hairs, whiskers will occasionally fall out and grow back.
Most cats have 12 whiskers that are arranged in four rows on either cheek, but the whisker pattern in dogs is more varied. Whiskers can also sprout above the eyes, as well as under the chin. Cats can also grow whiskers behind their wrists.
The primary function of whiskers is to aid with vision, especially in the dark, by providing additional sensory information — much like antennae on other creatures.
Although it's often called “tactile hair,” the whisker itself cannot feel anything. Instead, objects that brush up against a whisker cause it to vibrate, which then stimulates the nerves in the hair follicle. This explains why the scientific name for whiskers is vibrissae, which derives from the Latin word, vibrio, meaning “to vibrate.”
Cats use their facial whiskers to determine if they can fit into narrow spaces, and the whiskers on their legs may aid them in sensing prey or climbing trees.
Whiskers serve a similar purpose in dogs: Nearly 40 percent of the canine brain can detect when something touches a dog's face, especially the region where the whiskers are located.
Dogs and cats can also sense something even if it doesn’t actually touch a whisker. For example, a pet in a dark room can pick up on the fact that there's a wall nearby because of a change in air currents.
Some whiskers, especially those above the eyes, can also protect a pet from getting poked by long grasses and other objects.
The position of the whiskers can also clue you in to the mood of an animal. For example, felines may fold their whiskers back to say, “Stay away.”
Although it's an old wives' tale that cutting a pet’s whiskers off will affect his balance, it can compromise his ability to “feel” around his face. In other words, if you’re tempted to trim those unruly whiskers, it’s best to leave them alone.
For answers to other curious questions about animals, check out our other "What's the Deal With . . ." stories.
Like this article? Have a point of view to share? Let us know!
Thank you for subscribing to Petwire. Look for the latest newsletter each Wednesday.
Firefighters in Pennsylvania found two
dogs standing on the second floor of their
home a day after it burned.
Take some of the stress out of your next
veterinary visit by following Dr. Patty
Khuly's list of waiting room…
Have you been avoiding caring for your
cat or dog’s teeth? These essential tips
will help you get back on track.
We asked veterinary professionals which
human foods they give their dogs, from
carrots and apples to pizza and…
Wonder which dog or cat best fits your
lifestyle? Our new tool will narrow down
more than 300 breeds for you.
No one wants his best friend to be sick in the car. Dr. Andy Roark (literally) reveals the many signs of motion…
In his home country of Thailand, the intelligent and attention-loving Korat is a living symbol of luck and prosperity.
Take our breed quiz to find your next pet.
If the video doesn't start playing momentarily,
please install the latest version of Flash.
Thank you for subscribing.