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9 Signs Your Dog Needs Probiotics

Probiotics offer plenty of benefits for dogs. But what are the signs your dog needs probiotics? A vet explains what to watch for.

15 min read·Updated: Apr 02, 2026
9 Signs Your Dog Needs Probiotics

Probiotics can help support your dog’s digestive function, stool quality and overall wellbeing when given appropriately. Common signs that your dog might benefit from probiotics include occasional gas or digestive issues, inconsistent stools, seasonal or occasional allergies, and smelly breath. Probiotics can provide helpful proactive support for your dog’s overall wellbeing – which is why many pet parents choose to include a probiotic supplement in their dog’s long-term wellness plan. They may also be beneficial for dogs during periods of change, such as when changing their food, travelling, or moving house. 

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Veterinary insight:

JoAnna Pendergrass headshot
Dr JoAnna Pendergrass, DVM, PetLabCo. Consultant

Probiotics can be helpful, particularly during periods of change, but they should always be used as part of a broader approach to your dog’s overall health” – Dr. JoAnna Pendergrass, DVM, PetLabCo. Consultant

Key Takeaways: Signs Your Dog Needs Probiotics

  • Probiotics are live microorganisms that are similar to the beneficial bacteria naturally found in your dog’s gut microbiome
  • Your dog’s gut microbiome plays an important role in their overall wellbeing, often referred to as the gut-brain axis.
  • When given appropriately, dog probiotics may provide a range of potential benefits by supporting a healthy gut microbiome.
  • Even healthy dogs may benefit from probiotics to support gut balance and overall wellbeing.
  • Common signs that your dog may benefit from probiotics include occasional gas, a sensitive tummy, changes to the consistency/frequency of their stools, signs of seasonal or occasional allergies, smelly breath, or weight management concerns.
  • Before giving your dog probiotics, it is important to consult with your veterinarian – to ensure this is an appropriate step for your pup and to avoid masking any underlying health concerns that require veterinary investigation.

What Are Probiotics and How Do They Benefit Dogs? 

what do probiotics do for dogs
Probiotics can help support your dog’s overall gut health and wellbeing.

Probiotics are live microorganisms (e.g., beneficial bacteria, yeast) that can be found in food, such as yogurt, and are commonly packaged as dietary supplements. They are similar to the microorganisms found naturally in the gut, which comprise the gut microbiome. The microbiome is a collection of bacteria, yeast, and other beneficial microbes that help support gut health and overall wellbeing. 

Generally, probiotics support a healthy gut bacteria balance, leading to numerous positive benefits throughout the body. Different probiotic strains may play different roles in supporting digestive balance 

Probiotics have been studied for decades in human health, but their popularity and availability for pets began just a few years ago.

When given appropriately, as part of a balanced routine, probiotics may help support your dog’s digestive system and overall wellbeing. 

Choosing a product formulated specifically for dogs, with clearly listed strains and colony-forming units (CFUs), can help ensure consistency and suitability.

How Probiotics May Help Support Your Dog’s Overall Health

PetLabCo. Probiotic Chew is America's no. 1 selling probiotic chew for dogs
PetLabCo. Probiotic Chew supplement for dogs

The gut plays an important role in your dog’s overall wellbeing, and maintaining digestive balance may contribute to how your dog feels day to day.

Some pet parents choose to include probiotics as part of a broader long-term wellness routine, to help support their dog’s gut health and overall wellbeing. They may also be helpful during times of change or sensitivity. Probiotics are not intended to treat specific conditions.

Because every dog is different, it’s important to take an individual approach and speak with your veterinarian if you’re unsure whether probiotics are appropriate.

Dog Probiotics and Gut Health

Probiotics are most commonly used to help support digestive health in dogs. When given consistently, they may help support a healthy gut and normal digestive function.

Some dogs may benefit from probiotics during periods of transition, such as when changes are being made to your dog’s diet, or you are travelling. They may also help support normal stool consistency as part of an ongoing routine.

As with any supplement, responses can vary between dogs, and consistency is often key when using probiotics as part of digestive support.

Probiotics and Skin Health

Your dog’s skin comfort and digestive system health both impact their overall wellbeing. Some research suggests there may be a connection between these systems via the gut microbiome.

When the gut microbiome is well balanced, it can help support normal digestive function, which may play a role in how your dog looks and feels day to day. Some pet parents choose to include probiotics as part of their dog’s routine to help support this balance.

Probiotics may be used as part of a broader wellness approach but are not intended to treat any skin conditions. Dogs experiencing ongoing skin issues, such as continuous itching or irritation, should always be assessed by a veterinarian to determine the underlying cause.

Does Your Dog Need Probiotics? 9 Signs They Might 

Probiotics can be helpful for dogs showing changes in appetite, energy or digestion, dogs with seasonal or occasional allergies, and may also be included as a proactive approach for dogs in good general health. Your veterinarian can help you decide whether a probiotic supplement would help your dog.

Here are common signs that may suggest your dog could benefit from probiotics:

  1. Ocassional gas and bloating. Occasional gas is normal in dogs, but frequent gas, or stomach noises, may suggest your dog’s digestion is a little out of balance. This can sometimes happen after dietary indiscretion, such as eating spoiled or unfamiliar foods. In some cases, probiotics may help support digestive balance and comfort as part of a consistent routine. 
  2. Inconsistent stools. Dogs who experience occasional loose stools or periods of constipation may have temporary digestive imbalance. While it’s important to consult your veterinarian to rule out any underlying issues, some dogs may benefit from additional digestive support. Probiotics may help support normal stool consistency when used as part of a regular routine.
  3. Changes in overall wellbeing: If your dog seems generally out of routine, for example, showing changes in appetite, energy, or digestion, it may be worth taking a closer look at their overall health. Probiotics may help support digestive balance as part of a broader wellness routine.
  4. Seasonal allergies: Some dogs experience changes in comfort or routine during certain times of year and some pet parents choose to support their dog’s digestive balance during these periods with probiotics.
  5. Weight changes: If your dog’s weight or appetite changes, it’s important to review their overall diet and lifestyle with your veterinarian. Probiotics are not a weight management tool, but may be included as part of a broader wellness routine.
  6. Bad breath: Occasional bad breath can have a range of causes, including dental health and diet. While probiotics are primarily used to support digestive balance, some pet parents choose to include them as part of their dog’s overall care routine.
  7. Periods of stress: Changes in environment, travel, or routine can sometimes affect your dog’s digestive health. Some dogs may benefit from additional digestive support during these times, as part of a consistent routine.
  8. Skin and coat changes: Changes in your dog’s skin and coat, such as dryness or dull coats, can have multiple causes. Probiotics may support digestive balance and overall wellbeing, but they don’t replace treatments for skin conditions.
  9. Recurring health concerns: If your dog experiences ongoing or recurring health issues, it’s important to consult your veterinarian. Probiotics should not be used as a replacement for veterinary care, but may be used as part of a broader, vet-guided approach.

Additional considerations: 

  • Probiotics can be included in your dog’s long-term wellness plan as a proactive support for their overall wellbeing. 
  • Probiotics may not be suitable for every dog, particularly those with certain underlying health conditions.
  • It’s important to speak with your veterinarian before introducing any probiotic supplement to ensure it’s appropriate for their individual needs.
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How to Choose a Probiotic For Your Dog 

If your veterinarian recommends a probiotic, the next step is choosing a product that suits your dog’s individual needs. It’s important to select probiotics formulated specifically for dogs, as these are designed with canine digestive systems in mind.

Here are a few things to consider:

  • Named probiotic strains: Look for products that list specific probiotic strains on the label. Different strains may play different roles in supporting digestive balance.
  • Colony-forming units (CFUs): CFUs indicate the number of live microorganisms in each serving. Rather than focusing on higher numbers alone, it’s important to choose a product with an appropriate and clearly stated dosage for your dog.
  • Quality and formulation: Choose products that are clearly labelled, easy to administer, and suited to your dog’s preferences, such as soft chews, powders, or capsules.
  • Dog-specific formulation: Avoid using human probiotics unless advised by your veterinarian, as these may not be suitable for dogs.

Probiotics are generally well tolerated when used as directed. When introducing any new supplement, start gradually and monitor your dog’s response. If you’re unsure which option is right for your dog, your veterinarian can help guide you.

Which PetLabCo. Probiotic Supplement Is Right for My Dog?

PetLabCo. offers a range of carefully formulated supplements designed to support different aspects of your dog’s wellbeing. These products can be used as part of a consistent routine, depending on your dog’s individual needs. As with any supplement, it’s best to speak with your veterinarian about suitability.

PetLabCo. Probiotics For Dogs: Suitability & Benefits

PetLabCo. ProductSuitabilityKey Benefits
PetLabCo. Probiotic ChewDogs needing everyday digestive support or experiencing occasional digestive sensitivity.Formulated with probiotics, prebiotics, and postbiotics that may help support digestive balance and normal stool quality when used daily.
PetLabCo. Allergy & Immune ChewDogs with seasonal or environmental sensitivities as part of a broader wellness routine.Contains ingredients selected to help support skin health and overall wellbeing when used consistently.
PetLabCo. ProBright® AdvancedDogs needing additional support for oral care as part of a dental routine.Designed to help support dental hygiene and fresh breath when used alongside regular dental care.
PetLabCo. Joint Care Chew AdvancedDogs needing support for mobility and everyday movement.Formulated to help support joint function and mobility as part of an active lifestyle.

View the full range of PetLabCo. products.

How To Choose A Dog Probiotic: 3 Key Considerations For Pet Owners

  1. Select A Dog-Specific Probiotic: Human probiotics are formulated for the bacteria in the human gut, which is a different bacterial mix than what’s found in a dog’s gut. So, a human probiotic supplement would not help your dog. Many also contain ingredients like xylitol, which is not suitable for dogs. Always choose dog-specific probiotics that are specially formulated for dogs, as these products are designed to support canine digestive health and overall wellbeing. It’s important to consult your veterinarian before giving any probiotics or new supplements.
  2. Consider the Formulation: Probiotic supplements for dogs come as tablets, soft chews, powders, and liquids. Powders and liquids can be mixed into your dog’s bowl during mealtime. Tablets can be opened and poured into their bowl as well. And probiotic chews for dogs can be given directly, like a tasty reward. Decide which formulation will appeal most to your dog. Different formulations may contain different probiotic strains, each offering specific health benefits. Additionally, the number of colony forming units (CFUs) can vary between products, which affects the benefits of the probiotic supplement.
  3. Familiarize Yourself with Supplement Labels: Understanding a probiotic supplement’s label is also important. Here’s what to look for: Specific probiotics and strains: Different probiotics have different functions. Your veterinarian can guide you on which probiotics best suit your dog. It’s important to select the right probiotic strains for your dog based on their wellbeing, as certain strains can help with digestive balance, seasonal allergies, or immune support. Read this information on the label to ensure you’re getting a probiotic that will support your dog’s needs.
  4. Expiration date: The expiration date indicates the date a supplement should be used by. Pet parents should not give their dogs probiotics that are past the expiration date.
  5. Colony forming units (CFUs): CFUs indicate the number of live microorganisms for supporting gut health and overall wellbeing.
  6. Other ingredients: Usually, probiotics aren’t the only ingredient in the supplement. Other ingredients may include yeast, enzymes, and other nutrients.
  7. Storage instructions: Storage conditions, like temperature and moisture, can affect probiotics. Follow the storage instructions to ensure the good bacteria stay alive until the expiration date.
  8. NASC quality seal: NASC stands for National Animal Supplement Council. An NASC seal indicates that the manufacturer follows strict quality control measures to ensure their products are consistently high quality.

“When selecting a probiotic, suitability for your dog’s wellbeing is more important than simply choosing the product with the highest CFU count. Your veterinarian can help guide the best option based on your dog’s individual needs.” Dr. JoAnna Pendergrass, DVM

FAQ: Does My Dog Need Probiotics? Recognizing Signs 

a woman and a dog sit in the sunlight
Probiotics can provide long-term support for your dog’s gut health and wellbeing.

Can All Dogs Benefit From Probiotics?

Many dogs maintain healthy digestion on a complete and balanced diet, but probiotics can also be included proactively to support overall gut health.

Some dogs may benefit from additional digestive support during periods of change, such as diet transitions, environmental stress, or temporary digestive sensitivity.

Probiotics should be considered a supportive option, and their use should be guided by your dog’s individual needs. If you’re unsure, your veterinarian can help determine whether probiotics are appropriate for your dog.

How Do I Know if My Dog Needs Probiotics?

Some dogs may benefit from probiotics if they experience occasional digestive changes such as gas, loose stools, or sensitivity during diet or routine changes. These signs don’t always mean probiotics are needed but may indicate your dog could benefit from digestive support.

Should Dogs Take Probiotics Every Day?

Some dogs can take probiotics daily, particularly as part of a consistent routine and should be based on individual needs and veterinary guidance.

What Is the Best Probiotic for Dogs?

There is no single “best” probiotic for all dogs. The most suitable option depends on your dog’s size, diet, and individual needs. Look for dog-specific products with clearly listed strains and dosage guidance.

Final Thoughts: Signs Your Dog May Need Probiotics 

Dog probiotics are live beneficial bacteria that may help to maintain balance if your dog’s gut microbiome needs additional support. Different specially-formulated probiotics provide a range of potential benefits, from seasonal allergy support, to support for skin health, digestive function, and overall wellbeing. 

Pet probiotics are not a magic pill or cure-all. Instead, they are a supplement that complements a dog’s overall wellness regimen. They should be used as an add-on to healthy routines like daily exercise, a well-balanced diet, adequate hydration, and regular vet visits.

Signs your dog may need probiotic support include occasional digestive issues, bad breath, changes to their bowel movements or skin condition. Some dogs also benefit from probiotics during periods of transition, such as dietary change, travel, or boarding. 

It’s always best to speak to your vet before giving your dog probiotics, to ensure this is the right approach for their specific needs.

Disclaimer: PetLabCo. products are not intended to diagnose, treat, cure, or prevent any disease. Results may vary. Always consult your veterinarian before introducing a new supplement. Ingredient lists and quantities accurate at time of writing.


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JoAnna Pendergrass, DVMJ
Written by

JoAnna Pendergrass, DVM

JoAnna Pendergrass, DVM, is a veterinarian and freelance medical writer. As the founder and owner of JPen Communications, JoAnna is passionate about working with companies like PetLab Co. to educate pet parents and empower them to make informed health decisions for their pets. Since 2016, she has written hundreds of articles on a variety of topics in pet care, including behavior, wellness, and nutrition. In her free time, JoAnna enjoys playing the viola, baking, and seeing the world through the eyes of her fearless toddler.

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