Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

What Are Guard Hairs on Dogs? Vet Approved Facts & FAQ

Border collie on couch with dog hair fur

While you may think that all of your dog’s hairs are the same, dogs actually have multiple types of hair, and all of their hair is vastly different from the hair growing out of your head. One type of hair that dogs have is the “guard hairs.” These hairs are among the most important considerations made when it comes to grooming dogs, especially when a pet parent wants to shave their dog for the summer.

divider dog paws 4 oct 2024What Are Guard Hairs?

Merriam-Webster Dictionary defines “guard hairs” as “long, coarse hairs forming a protective coating over the undercoat of a mammal.” Essentially, the hairs that you like to pet and fluff when your dog comes over for cuddles are their guard hairs.

hand holding the brush while getting the dog's hair
Image By: sonsart, Shutterstock

What Do Guard Hairs Do?

According to the Britannica encyclopedia, the guard hairs protect the more delicate undercoat and skin from abrasions and, in many cases, moisture. Not all dogs have an undercoat. Short-haired dogs, such as Boxers, are “single-coated” and have only guard hairs, though they are considerably shorter than what one might imagine guard hairs to look like.

The guard hairs differ from the ground hairs—those that make up the undercoat—in quality, texture, and function. The undercoat’s hairs are designed to help regulate the animal’s body temperature. They tend to be finer, softer, and shorter. The guard hairs are longer, coarser, and are designed to protect the body against the elements.

What Happens If the Guard Hairs Are Shaved?

When shaving your dog, you don’t get to pick and choose what you keep. Everything in the clippers’ path will be removed, including guard and ground hairs, depending on the height of the blades.

Shaving either the guard or ground hairs can have devastating effects on your dog’s health. If your dog is double-coated, like German Shepherds or Saint Bernards, shaving them will let them without insulation making the dog susceptible to heat stroke, sunburn, and damage from the elements. Shaving can result in improper hair growth, follicle damage, and permanent changes in the coat’s texture.

Guard hairs are critical for dogs to protect themselves against things like minor cuts and scrapes that would be avoided entirely if the guard hairs had not been removed. Additionally, when shaving the guard hairs, you run the risk of shaving off your dog’s undercoat, which can impact their ability to regulate their body temperature.

Dog hairclip
Image By: David Herraez Calzada,Shutterstock

Will Shaving the Guard Hairs Help My Dog in the Summer?

Short answer, no. Shaving your dog’s hair will not help them regulate their body temperature and keep cool during the summer. More often than not, dog parents who shave their dogs in the summer just end up shaving off the undercoat, which is critical to your dog’s ability to self-regulate body temperature.

The ground hairs insulate the body to keep it at a particular temperature, and shaving those hairs away will actually put your dog at an increased risk of heatstroke in the summer or hypothermia in the winter.

It’s natural to want to do everything you can to improve your dog’s daily life, but shaving them isn’t something you should do, even in the summer. Guard hairs are an important part of your dog’s continued well-being. So, leaving them where they are is the best course of action. Of course, if your dog has hair that grows continuously, you may need to get them trimmed now and again, but shaving should only be done with the oversight of a veterinarian or professional groomer to make sure that your dog will be safe from the elements after you shave them.

If you have any concerns about your dog or their health, we recommend you contact your vet directly.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the advice you need for your dog — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

divider dog paws 4 oct 2024Final Thoughts

Guard hairs are just one way that dogs have evolved to suit their environments. They’re a crucial part of your dog’s body, and you should take good care of them so your dog is happy and healthy! Learning everything you can about how your dog interacts with the world can help you become a better dog owner. Your dog undoubtedly thanks you for your diligence and understanding.


Featured Image Credit: Julia Zavalishina, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

How Often Should You Wash Dog Food & Water Bowls: Vet Approved Advice

For many of us, our pets are our world, and we try our best to love and care for them the same way...

10 Best Dog Nail Grinders in 2026 – Reviews & Top Picks

Trimming your dog’s nails is a necessary part of dog ownership, but it’s not fun for anyone. The process can be stressful for...

8 Best Dog Foods for Australian Shepherds in 2026: Reviews & Top Picks

If you have an Australian Shepherd, you know they’re a breed of their own. These medium-large dogs are highly energetic and intelligent, so...

Life’s Abundance Dog Food vs. Blue Buffalo 2026: Pros, Cons & What to Choose

There are a surprisingly high number of dog food brands out there. Plus, each brand has different recipes, which all contain different ingredients...

More related

Can You Teach an Old Dog New Tricks? Vet-Verified Facts & Tips

It’s an age-old question of whether or not you can teach an old dog new tricks, and many people believe that it’s impossible,...

Do Dogs Have a Dominant Paw? Is Your Dog a Lefty or Righty? What Science Says

While the majority of humans are right-handed, dominant paws in dogs don’t lean heavily towards one side. Studies show that some dogs have...

Why Does My Shih Tzu Lick Their Paws? 6 Common Reasons

Does your Shih Tzu act like a cat? As it turns out, it’s fairly common for Shih Tzus to obsessively lick their paws....

Wag vs Blue Buffalo Dog Food: 2026 Comparison, Pros & Cons

Great dog food leads to happy dogs but picking out the right food for your dog can be hard. With hundreds of different...

Keep reading

Homemade Dog Food vs Store-Bought: Vet-Verified Pros & Cons

Dog owners want to give their dogs the best food possible, which may lead some people to wonder which is better for them: homemade or store-bought food? In this article, we compare both in detail. In almost all aspects, store-bought...

Dogster_Homemade vs Store-bought dogfood

Can Dogs Eat Trout? Vet Reviewed Facts & Info

Are you considering giving your dog some tasty trout? You may be wondering if this popular fish is safe for them to digest. So, can dogs eat trout? To cut a long story short, yes they can, but it’s only...

Can Dogs Eat_trout

How Much Does a Cavalier King Charles Spaniel Eat in a Day? Our Vet Explains

The Cavalier King Charles Spaniel is a toy dog breed that’s among the most popular dog breeds kept as pets today. Ranking at #14 according to the American Kennel Club’s (AKC) popularity ranking for 2023, it’s evident that these charming...

cavalier king charles spaniel eating bone treat

Can Dogs Eat Longan? Vet-Verified Nutrition Facts & FAQ

For humans, few fruits match the burst of musky sweetness that a longan fruit offers, but can dogs eat longan? Dogs can eat a small amount of longan, providing the shell and pit of the fruit are removed. However, just...

Can Dogs Eat Longan

Can Dogs Eat Yucca? Vet-Verified Facts & FAQ

If you live near a desert in the United States, you’re probably familiar with the yucca plant. It has several other names, including Spanish bayonet, Adam’s needle, and needle palm, and it comes in several forms. But most yucca plants...

Can Dogs Eat Yucca

10 Best Raw Dog Food Delivery Services in 2026 – Reviews & Top Picks

It can be overwhelming to choose food for your dog, especially a raw diet. Raw diets have been becoming popular, so many companies are offering raw foods. However, that doesn’t mean all companies produce balanced, high-quality raw diets. We’ve compiled...

raw dog food

Can Dogs Eat Eggplant? Vet-Reviewed Facts & FAQ

Although your dog may want to eat just about everything in your house, there are a lot of foods that must be kept out of their reach for their own safety. Food products such as chocolate and avocado or anything...

Can Dogs Eat Eggplant

Are Tomato Plants Toxic to Dogs? Vet-Verified Facts & Safety

If you get online regarding feeding dogs tomatoes, you’ll get mixed opinions. Some say that you should never give your dog any tomatoes, despite their ripeness, while others claim that ripe tomatoes can be okay in moderation. Ultimately, you should...

Dogster_Are Tomato Plants Toxic to Dogs