My Dog Keeps Sighing… Do Dogs Get Sad?

Laura from Manchester emailed us to ask: “Why does my Labrador keep sighing? It’s almost like she’s upset or bored. I don’t know what to do about it!”

Bella, her 5-year-old Labrador, had been sighing frequently, particularly when Laura wasn’t paying her much attention. Laura wanted to know if Bella’s sighs were a sign that she was sad or if there was another reason behind the behaviour.

In this article, our Chief Veterinarian and Omni Co-Founder, Dr. Guy MRCVS, explains why dogs sigh, what it could mean, and when to take note of the behaviour and seek further veterinary attention. 

Our Chief Veterinarian, Dr. Guy MRCVS, Answers

Firstly, yes, dogs absolutely do get sad! 

Dogs, like almost all animals, are sentient and intelligent beings with thoughts, feeling, and emotions. Like many other animals, too, dogs feel pleasure, pain, joy, sadness, and can even suffer depression

However, sighing is not necessarily a sign that your dog is sad or depressed - there are many other explanations, too.

While dogs may not express emotions in exactly the same way we do, sighing can be a form of communication for them.

Reasons Why Your Dog Is Sighing

There are many reasons why dogs sigh, and it’s usually a part of their body language, just like wagging their tail or barking. Here are some common interpretations of sighing in dogs and how to recognise what your dog might be feeling.

1. Relaxed or Sleepy Sighing

One of the most common reasons for sighing is contentment. When your dog is feeling relaxed or sleepy, they might let out a deep sigh as they settle down. This is often accompanied by a relaxed posture—your dog may be lying down with their eyes partially closed, clearly at ease.

Key signs your dog is sighing out of relaxation:

  • They’re lying down or resting in a comfortable position.
  • Their posture is loose, and they may be closing their eyes or drifting off to sleep.

In this case, sighing is nothing to worry about - it’s just a sign your dog is calm and happy! 

2. Sighing Due to Boredom

Dogs also sigh when they’re bored or when they’ve failed to get the attention they were seeking. If your dog has been trying to engage you in play or activity and isn’t successful, they may give a sigh, almost like they’re resigning themselves to the fact that they won’t get what they want. This type of sigh is often more deliberate and might be followed by your dog sitting up or glancing at you expectantly - a bit like a cheeky child! 

Key signs your dog is sighing out of boredom:

  • They’ve just tried to get your attention (e.g., bringing you a toy, nudging you).
  • They sit up or lie near you, watching you closely.

If your dog is sighing from boredom, it’s a sign they need more mental or physical stimulation. Try engaging them with a toy or take them out for a walk to burn off some energy. 

3. Sighing Due to Anxiety or Stress

In some cases, sighing can be a sign of anxiety or stress. When dogs are feeling tense, they may let out a sigh as part of their coping mechanisms. You’ll often notice that this type of sigh is accompanied by other anxious behaviours, such as a stiff posture, ears pinned back, or restlessness.

Key signs your dog is sighing due to anxiety:

  • Their posture is stiff, or they appear restless and unable to settle.
  • They have their ears back, and their body language is tense.

If your dog is sighing out of anxiety, it’s important to identify the cause of their stress and address it. This might include creating a calm environment or seeking advice from your vet on how to manage your dog’s anxiety.

To combat stress, our vets recommend supplementing with a Stress and Anxiety soft chew once per day, packed with natural ingredients to boost your dog’s serotonin levels and live a more peaceful, settled, and happier life! 

When to Be Concerned

While sighing is usually a harmless behaviour, there are a few cases where it might indicate something more serious. If your dog’s sighing is accompanied by changes in their behaviour, such as lethargy or a loss of appetite, it’s worth keeping an eye on them. Additionally, excessive sighing could be a sign of underlying boredom, stress, or even a medical issue if it’s paired with other unusual behaviours.

You should seek veterinary advice if:

  • Your dog’s sighing becomes excessive or is accompanied by other signs of stress or illness.
  • The sighing is part of a broader pattern of behaviour that seems unusual for your dog.

How to Address Excessive Sighing

If you’re concerned that your dog’s sighing is due to boredom, anxiety, or a need for attention, here’s how you can help:

1. Engage Your Dog with Activities

Provide plenty of physical exercise and mental stimulation to keep your dog occupied. Long walks, interactive toys, and training exercises can all help reduce boredom-related sighing.

2. Create a Calm Environment

If your dog is sighing due to anxiety, consider creating a quiet, stress-free space for them to relax. Calming aids like a soothing blanket or a quiet corner of the house may help reduce their anxiety. 

3. Make Use of Stress & Anxiety Supplements!

In many cases, stress and anxiety supplements designed for dogs can be beneficial. That’s why our vets developed Omni Rescue’s Stress and Anxiety Supplement which contains safe, natural and effective ingredients like valerian root or L-tryptophan (which dogs turn into serotonin), which in turn help to ease anxiety and promote relaxation. 

4. Positive Reinforcement

If your dog is sighing for attention, try not to reinforce the behaviour by responding immediately, as this can teach them that persistent sighing is a positive behaviour that is rewarded by play sessions. Instead, offer them attention or engage them in activities on your terms, reinforcing positive behaviours.


Speak with a Vet If…

You should speak to a vet if:

  • Your dog’s sighing is accompanied by other signs of distress, such as pacing, whining, or changes in appetite.
  • The sighing seems to indicate discomfort, particularly if your dog appears restless or unsettled.

If you’re noticing any of these signs, it’s a good idea to consult with a vet to ensure there’s no underlying medical or emotional issue that needs addressing.

Thoughts from Dr Guy MRCVS


As dog lovers and guardians, it’s natural to worry about our furry friends, especially when they display abnormal symptoms that can’t be easily explained. That’s why, when I founded Omni, I knew that I wanted to keep vet consultation free and accessible at the heart of the business. 


If you’re understandably worried about your dog, but you don’t think you need to take them to the vets urgently, I highly recommend getting some friendly, professional advice from one of our team. 


Book your appointment here


Explore some of the frequently asked questions in our Ask a Vet series 


Got a question for the Ask a Vet team?


Submit your question via email to woof@omni.pet. We’ll get back to you as soon as we can, and, if suitable, post the response here to help others, too! 


Disclaimer: Whilst the advice given here is based on medical experience from our experts, and scenarios we do encounter during our career - we do not give tailored or specific advice for individual pets - please seek assistance from your in person vet as a first point of call with any issues your pet is having which are a cause for concern as soon as possible.

FAQs

But aren’t dog’s carnivores?

Dogs are in fact nutritional omnivores as demonstrated by a robust scientific study published in the reputable journal Nature (1,2) in which it was shown that they have 30 copies of the AMY2B gene responsible for digesting plant-based foods.

They have also evolved relatively long intestines (21) (almost as long as humans) and relatively flat surfaces on their molars (31, 22) which they use for digesting and chewing a whole range of foods.

The common misconception that dogs are carnivores probably arises from the fact that they are classified in the order Carnivora but so are plenty of other species like bears, skunks, racoons who are omnivores and even the giant panda who thrives on a plant-based diet (20).

Is plant protein digestible to dogs?

Absolutely yes, studies which have looked at how much protein dogs can absorb from plant-based and fungi-based foods like soya and yeast demonstrated over 75% digestibility which is on par with meat-based foods (23, 24, 34, 35 & 25).

Both these protein sources also contain all 10 essential amino acids (36, 37) that dogs need to thrive.

Isn't there too much fibre in plant-based food?

The average amount of fibre in a commercial dog food diet is between 2-4%. omni’s plant-powered recipe has a fibre content of 3% which is on par with meat- based diets.

In our survey with over 200 dog owners, 100% reported that their dog’s stool consistency was either ‘normal’ or ‘perfect’ and there were no reports of any digestive upsets (data on file).

Can I mix omni with other meat-based diets?

We are proud that our recipes are nutritionally complete and so include everything your dog needs to thrive. This means omni can be fed as a sole ration. We also fully support a 'flexitarian approach' like meat free lunches or using omni as a mixer.

Every little helps to bring some of the health and environmental benefits of plant-power to meal times. Mixing omni with meat/fish will help to add variety into your dog’s diet whilst adding in healthy ingredients with a relatively low carbon footprint.

Can plant-based food provide the essential fatty acids dogs need?

All the essential fats and oils that dogs need, including omegas 3 and 6 are found in a variety of both meat and plant-based foods (31, 28).

omni’s recipe is rich in plant-based sources of these nutrients so your dog will get all the essentials they need.

I hear a lot about feeding raw meat, isn’t that better?

Feeding raw meat to dogs has become a very popular trend in recent years, but most vets will warn against this practise. This is because the cooking process is vital to help kill off dangerous bacteria like E coli, Salmonella and Campylobacter (9) that have necessitated several food recalls from the market and caused serious illness and even death in both dogs and their owners (40, 41, & 42).

There are also several worms and parasites that are only killed off when raw meat is cooked. Dogs are dogs, not wolves and thanks to their domestication over thousands of years, thankfully don’t need to hunt to get their grub nor do they need to eat raw meat, it's just not worth the risk.

References

1. Buff P.R., Carter R.A., Bauer J.E., Kersey J.N. (2014) Natural pet food: A review of natural diets and their impact on canine and feline physiology. J. Anim. Sci.;92:3781–3791. doi: 10.2527/jas.2014-7789


2. Axelsson E., Ratnakumar A., Arendt M.L., Maqbool K., Webster M.T., Perloski M., Liberg O., Arnemo J.M., Hedhammar A., Lindblad-Toh K. (2013) The genomic signature of dog domestication reveals adaptation to a starch-rich diet. Nature; 495:360–364. doi: 10.1038/nature11837


3. The European Pet Food Industry (FEDIAF) Nutrition [ Accessed on 3 June 2021] Available online: http://www.fediaf.org/self-regulation/nutrition/


4. Gentle World Good Nutrition for Healthy Vegan Dogs [Accessed on 3 June 2021] Available online: http://www.webcitation.org/6ineIZmNQ


5. Peden J. (1999) Vegetarian Cats & Dogs. 3rd ed. Harbingers of a New Age; Troy, MT, USA


6. Semp P.-G. (2014) Master’s Thesis. Veterinary University of Vienna; Vienna, Austria: Vegan Nutrition of Dogs and Cats


7. Brown W.Y., Vanselow B.A., Redman A.J., Pluske J.R. (2009) An experimental meat-free diet maintained haematological characteristics in sprint-racing sled dogs. Br. J. Nutr.;102:1318–1323. doi: 10.1017/S0007114509389254


8. People for the Ethical Treatment of Animals (PETA) Dog Health Survey. [Accessed on 3 June 2021]


9. Marks S.L., Rankin S.C., Byrne B.A., Weese J.S. (2011) Enteropathogenic bacteria in dogs and cats: Diagnosis, epidemology, treatment, and control. J. Vet. Intern. Med.;25:1195–1208. doi:


10. Carrión P.A., Thompson L.J., Motarjemi Y., Lelieveld H., (2014) Food Safety Management: A Practical Guide for the Food Industry. Academic Press; London, UK:. pp. 379–395


11. Knight, A. and Leitsberger, M. (2016) Vegetarian versus meat-based diets for companion animals. Animals 6, 57.


12. Boyer C.I., Jr., Andrews E.J., deLahunta A., Bache C.A., Gutenman W.H., Lisk D.J. (1978) Accumulation of mercury and selenium in tissues of kittens fed commercial cat food. Cornell Vet.;68:365–374.


13. Anonymous. Your Pet’s Dog Food Could Be Dangerous. [Accessed on 8 December 2014] Available online: http://www.wavy.com/Global/story.asp?S=1018127&nav=23iiCT4S.


14. Porecca K. (1995) Personal letter to James Peden re: Interview of University of California (Davis), North Carolina State University, and University of Guelph Researchers investigating the connection between dilated cardiomyopathy and diet


15. Perry T. What’s Really for Dinner? [Accessed on 7 July 2016] Available online: http://www.webcitation.org/6ipEL5YVR.


16. https://www.bordercolliefanclub.com/bramble-the-vegan-dog-lives-to-189-years/


17. https://aminoapps.com/c/vegan/page/blog/vegan-dog-lives-to-27-years-of-age/N4ai_MuaRE5qNoYVN1DN85ap0GVjz3j


18. https://v-dog.com/blogs/v-dog-blog/vegan-diets-for-dogs-what-about-longevity


19. https://www.fediaf.org/39-prepared-pet-foods/80-understanding-labels.html


20. https://vetnutrition.tufts.edu/2016/07/vegan-dogs-a-healthy-lifestyle-or-going-against-nature/

21. https://www.petmd.com/dog/nutrition/7-interesting-facts-about-your-dogs-digestive-system

22. http://www.vivo.colostate.edu/hbooks/pathphys/digestion/pregastric/dogpage.html

23. Félix AP, Zanatta CP, Brito CB, et al. (2013) Digestibility and metabolizable energy of raw soybeans manufactured with different processing treatments and fed to adult dogs and puppies. J Anim Sci;91:2794–2801.


24. Carciofi A, de-Oliviera L, Valério A, et al. (2009) Comparison of micronized whole soybeans to common protein sources in dry dog and cat diets. Anim Feed Sci Technol;151:251–260.

25. Yamka R, Kitts S, Harmon D. (2005) Evaluation of low-oligosaccharide and low-oligosaccharide low-phytate whole soya beans in canine foods. Anim Feed Sci Technol;120:79–91.

26. Hill D. (2004) Alternative proteins in companion animal nutrition, in Proceedings. Pet Food Assoc Canada Fall Conf;1–12

28. Hazewinkel HA, Tryfonidou MA. (2002) Vitamin D3 metabolism in dogs. Mol Cell Endocrinol;197:23–33.
Boland R, Skliar M, Curino A, et al. (2003) Vitamin D compounds in plants. Plant Sci;164:357–369.

29. Jäpelt RB, Jakobsen J. (2013) Vitamin D in plants: a review of occurrence, analysis, and biosynthesis. Front Plant Sci;4:136

30. Knight, A. and Leitsberger, M. (2016). Vegetarian versus meat-based diets for companion animals. Animals 6, 57.

31. Dodd SAS, Adolphe JL, Verbrugghe A. (2018) Plant-based diets for dogs. J Am Vet Med Assoc. Dec 1;253(11):1425-1432. doi: 10.2460/javma.253.11.1425. PMID: 30451617.

32. https://www.petmd.com/dog/wellness/evr_dg_how_long_do_dogs_live [Accessed 2 June 2021]

33. https://www.utep.edu/leb/pleistnm/stuff/stuff2.htm [Accessed 2 June 2021]

34. M S Martins, N K Sakomura, D F Souza, F O R Filho, M O S Gomes, R S Vasconcellos, A C Carciofi (2014) Brewer’s yeast and sugarcane yeast as protein sources for dogs, J Anim Physiol Anim Nutr (Berl) 2014 Oct;98(5):948-57. doi: 10.1111/jpn.12145.

35. Christina Golder, James L Weemhoff, Dennis E Jewell (2020) Cats Have Increased Protein Digestibility as Compared to Dogs and Improve Their Ability to Absorb Protein as Dietary Protein Intake Shifts from Animal to Plant Sources 24;10(3):541. doi: 10.3390/ani10030541.

36. Henkel J. (2000) Soy. Health claims for soy protein, questions about other components. FDA Consum ;34(3):13–15,18–20.

37. Yalçin, Sakine & Erol, H & Özsoy, Bülent & Onbaşılar, I. (2008) Effects of the usage of dried brewing yeast in the diets on the performance, egg traits and blood parameters in quails. Animal : an international journal of animal bioscience. 2. 1780-5. 10.1017/S1751731108003170.

38. Rosser EJ (1993) Diagnosis of food allergy in dogs. Journal of the American Veterinary Medical Association; 203(2):259-262.

39. Mueller RS, Olivry T, Prélaud P. (2016) Critically appraised topic on adverse food reactions of companion animals: common food allergen sources in dogs and cats. BMC Vet Res.12:9. Published 2016 Jan 12. doi:10.1186/s12917-016-0633-8

40. https://www.kentlive.news/whats-on/shopping/salmonella-fears-spark-urgent-recall-4328262

41. https://www.food.gov.uk/news-alerts/alert/fsa-prin-31-2020

42. L. Martinez-Anton, M. Marenda, S.M. Firestone, R.N. Bushell, G. Child, A.I. Hamilton, S.N. Long, M.A.R. Le Chevoir (2018) Investigation of the Role of Campylobacter Infection in Suspected Acute Polyradiculoneuritis in Dog


43. https://www.foodsafetynews.com/2018/10/four-stec-infections-one-person-dead-after-exposure-to-raw-pet-food/

44. https://www.theguardian.com/science/2018/jan/12/scientists-criticise-trend-for-raw-meat-pet-food-after-analysis-finds-pathogens

45. https://news.cancerresearchuk.org/2015/10/26/processed-meat-and-cancer-what-you-need-to-know/

46. D.F. Merlo, L. Rossi, C. Pellegrino, M. Ceppi, U. Cardellino, C. Capurro, A. Ratto, P.L. Sambucco, V. Sestito, G. Tanara, V. Bocchini (2008) Cancer Incidence in Pet Dogs: Findings of the Animal Tumor Registry of Genoa, Italy
https://doi.org/10.1111/j.1939-1676.2008.0133.x , journal of veterinary internal medicine

47. https://www.pfma.org.uk/_assets/docs/White%20Papers/PFMA-Obesity-Report-2019.pdf

48. https://www.pfma.org.uk/grain-free-factsheet

49. https://fediaf.org/images/FEDIAF_Nutritional_Guidelines_2020_20200917.pdf

50. https://www.ksvdl.org/resources/documents/dcm-forum/Confidential-Abstract-for-release-October-14-2020-Final.pdf

51. https://www.ksvdl.org/resources/documents/dcm-forum/DCM-Forum-SolomonOpening-Remarks.pdf

52. https://stpetersbark.com/finally-theres-no-evidence-linking-grain-free-diets-and-non-hereditary-heart-conditions-in-dogs/

53. Okin GS (2017) Environmental impacts of food consumption by dogs and cats. PLoS ONE 12(8): e0181301. https://doi.org/10.1371/journal.pone.0181301

See more questions