Have you ever heard a sighing sound while relaxing at home and wondered where it came from? Or perhaps you've rounded the kitchen corner and caught your dog sighing?

A human sigh could mean contentment, tiredness, relaxation or even disappointment. But do dogs experience that same range of emotions when they sigh? Let's take a deeper dive to better understand dog sighing: why it happens, what it means and what sounds are similar but different from sighing.

What Is Sighing?

Sighing is a natural bodily function common to humans and other animals. Wondering what sets a sigh apart from a normal breath? Well, most breaths are so quiet they don't immediately register as audible. A sigh is a long breath in and out that differentiates itself by being louder.

Popular Science defines sighing as "a deep long breath about twice the volume of a typical breath." They continue, "It also serves as a sort of stretch for your lungs — a periodic deep breath inflates the alveoli, tiny sacs in the lungs where oxygen and carbon dioxide pass in and out of the blood."

Dogs sighing is a natural bodily response, and it's nothing for pet parents to be anxious about.

Why Do Dogs Sigh? What Does it Mean?

According to an article from the American Kennel Club (AKC), sighs can be translated into both positive and negative emotions. The AKC explains, "When the sigh is combined with half-closed eyes, it communicates pleasure; with fully open eyes, it communicates disappointment: [such as saying] 'I guess you are not going to play with me.'"

However, the AKC also states that while sighs can potentially indicate disappointment, moans and sighs more commonly indicate pleasure.

Try to keep an eye on your pet's overall body language and behavior when you hear them sighing. Do they seem distressed, tired or upset? Or are they acting content, calm or sleepy? The more clues you have from your dog, the better you'll be able to determine what their sighing means.

Sounds Similar to Sighing

Not sure if what you're hearing is a sigh? Here are a few different ways dogs audibly make noise so you can determine whether your pet is sighing or not:

  • Yawns: Yawns can often be mistaken for sighs as they involve taking a deep breath. However, a yawn requires a wide open mouth, whereas a sigh can be done through a mostly closed mouth or even through the nose. A yawn is mostly an involuntary bodily function; sighs can be voluntary.
  • Moans: These are somewhat similar to sighs. They are both low sounds emitted by a dog, though in the case of a sigh, the "sound" you hear comes from the breath. When a pet moans, they're actually making the sound with their vocal cords.
  • Panting: Finally, panting is also similar to sighing as it involves an auditory breathing sound. However, the big difference here is that panting involves many short breaths while sighing is usually one longer breath.

Now, when you hear your pet sigh, you'll know your dog is either relaxing, content or feeling a bit gloomy. But don't worry if it's the latter — a belly rub may be all they need to sigh in a happy manner.

Erin Ollila Erin Ollila

Erin Ollila believes in the power of words and how a message can inform—and even transform—its intended audience. Her writing can be found all over the internet and in print, and includes interviews, ghostwriting, blog posts, and creative nonfiction. Erin is a geek for SEO and all things social media. She graduated from Fairfield University with an M.F.A. in Creative Writing. Reach out to her on Twitter @ReinventingErin or learn more about her at http://erinollila.com.

Related articles

Is Your Dog a Carnivore or an Omnivore?

Learn about the different classifications between carnivores and omnivores to decide which order dogs fall under.

Avoiding Returning a Dog to the Animal Shelter

Learn how to avoid having to return a dog to the animal shelter after adoption by understanding the reasons why dogs are returned.

Can Dogs Get Braces? (& Are They Safe?)

Learn when braces can be an option for dogs, like when a dog has severe bite or teeth alignment issues, and how they can help dogs chew & eat normally.

Hip Dysplasia in Dogs: Causes, Symptoms, & Treatment

Learn all about hip dysplasia in dogs, including causes & symptoms of the disease, most susceptible breeds, diagnosis and treatment options.

The Science Behind a Dog IQ Test

Curious to know how smart your dog is? Learn about the different types of dog intelligence and see how trainable he is with an IQ test.

Why Does My Dog Eat So Fast?

It's common for dogs to eat faster than humans, but learn why exactly some dogs might eat too fast and any health issues that can come up because of it.

How Do I Know If My Dog Likes Day Care?

Learn tell-tale signs to figure out if your dog really likes going to day care, as well as signs that it might be time to explore other day care options.

How to Spot and Prevent Periodontal Disease in Dogs

Periodontal disease in dogs is a common and painful problem. Learn how to spot symptoms to help you treat and prevent it from affecting your pet's health.

Helpful Ways to Keep Your Dog's Skin & Coat Healthy

Keep your dog's skin and coat healthy by following these proper dog grooming tips including bathing, brushing, and feeding advice.

Heterochromia in Dogs: Why Your Dog Has Two Different-Colored Eyes

If you've wondered why your dog has two different colored eyes, learn about this condition called heterochromia and if it's tied to any health issues.

Transportation and traveling

If you're planning on transporting or traveling with your puppy any time soon, you should consider following these helpful suggestions to keep them safe.

When You Should Be Concerned About Your Dog's Dry Nose

A dog's nose can be an indicator of health, so learn how to best care for your dog if their nose is dry, cracked, warm, red, flaky, or has nasal discharge.

Helpful Tips for a Teething Puppy

Teething is a part of a puppy's life. Use these 3 tips to help your puppy through this difficult time and protect your household from teething incidents.

Walking Big Dogs Safely: Tips and Tricks from Dog Experts

Learn expert tips on the best ways to walk your large breed dog, including training suggestions, which equipment works best, and how to walk multiple dogs.

Steps to Successfully House Train Your Puppy

Learn about the rules for house training your puppy, preventing your puppy from starting any bad habits, how to keep a schedule and rewarding good behavior.

Registering Your Dog as a Therapy Dog

Learn about therapy dogs, the training that therapy dogs go through, and what you need to do to register your pup with a therapy dog organization.

Effective Ways to Curtail Your Dog's Excessive Barking

Learn the reasons why your dog might be excessively barking, as well as how to train him to recognize when to stop.

Reading Dog Food Reviews: What You Need to Know

Learn how to tell the difference between trustworthy dog food reviews and those that are unfounded. Use these six criteria for evaluating reviews.

5 Ideas for Indoor Exercise for Dogs

Learn how to keep your dog moving with some indoor exercise tips. If you're stuck inside, help them beat cabin fever and keep their body and mind active.

Tips for Helping Your Dog's ACL Surgery Recovery

Learn how you can help your dog recover from ACL surgery, including tips for their activity, medications and nutrition.