IT’S no secret that chronic stress and anxiety can increase the odds that a person will develop gray hair. Now, new research has found that phenomenon extends to dogs as well.

    The study, which was published in the journal Applied Animal Behavior Science, found that young dogs whose owners said the pets were anxious and impulsive were more likely to develop gray muzzles prematurely when compared to dogs that were not rated as anxious or impulsive.

    For the study, researchers took a sample of 400 dogs, ages 1 to 4, photographed them, rated their muzzles on a scale of “no gray” to “full gray,” and had their owners fill out a questionnaire about the dogs’ behaviors and characteristics. The researchers included questions that indicated dog anxiety, such as whether the dog destroyed things when left alone or lost hair when examined by a vet, as well as impulsivity, such as whether a dog jumped on people, was hyperactive after exercise, or had an inability to be calm. Here’s what they found: Dogs that had impulsive and anxious behaviors were “significantly” more likely to develop prematurely gray muzzles. Female dogs, as well as dogs that had a fear of noise, unfamiliar animals, and people were also more likely to prematurely go gray.

    Study co-author Thomas J. Smith of Northern Illinois University says that he was skeptical of the study at first, but calls the results quite striking.

    Carol Osborne, veterinarian at Chagrin Falls Pet Clinic, says that she sees this in her clinic all the time. “Dogs turn gray because of aging, stress, and anxiety, just like people do,” she says. Anxiety creates hormonal changes in the body, including the release of the stress hormone cortisol, which causes the release of many other hormones in the body that accelerate the aging process, she explains, noting that this is true for both dogs and humans.

    While you’re probably not overly concerned with your dog having a prematurely gray muzzle, it can be a sign that your dog is stressed or anxious. To help, Osborne recommends getting your dog a playmate, taking it for frequent walks, or enrolling your dog in an agility club where it can work off excess energy and anxiety.

    If you find that your dog tends to get stressed or anxious during thunderstorms, she recommends getting a “thunderstorm shirt,” a specially designed shirt for dogs with this common anxiety that makes them feel as if they’re being hugged.

    If you have an anxious dog, it’s a good idea to check in with your vet, who may be able to make specific recommendations based on your dog’s needs.(SD-Agencies)