Click here to learn more.
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 Signing Up
for the Petwire newsletter, sending you all the pet news each week directly to your inbox.
Get the latest pet news, tips, tricks, and expert advice sent right to your inbox!
Bo and Sunny are featured in the pop-up holiday card from the White House that arrived in mailboxes this week.
A calm space will keep your animal from reacting to the stress of holiday guests with bad or even dangerous…
Pet food recalls due to salmonella are on the rise. Dr. Tina Wismer shares what precautions pet owners should take.
Most of us only think about insects when they're bugging us. But the truth is, they keep our natural world…
Take a peek at what Santa's reindeer are doing when they're not flying with the big guy on Christmas Eve.
Dr. Andy Roark has a message for those thinking about “blessing” unsuspecting souls with a surprise pet:…
The Siberian Husky has been popular ever since a team of these dogs delivered lifesaving medicine to Nome, Alaska.
If the video doesn't start playing momentarily,
please install the latest version of Flash.