1. Home
  2. Dog
  3. Food & Nutrition

Can Probiotics Improve Your Dog’s Mood?

Chewy Editorial
By Chewy Editorial
Updated
Apr. 30, 2025

Photo by Chewy

Probiotics may be hard to pronounce (you try saying lactobacillus acidophilus five times fast!), but these dog supplements serve as an important part of your dog’s daily diet and can help to keep him healthy from the inside out.

They might have funny names, but probiotics have serious benefits when it comes to your dog’s well-being. Probiotics, also known as “good bugs,” are types of bacteria that not only help to ease digestion and boost immunity, but also can contribute to your dog’s happiness.

“The link between probiotics and mood improvement in dogs is an emerging area of research already producing encouraging results,” says Dr. Stephanie Liff, DVM, of Pure Paws Veterinary Care in New York City. “Some studies have shown that probiotics may help decrease stress behaviors in anxious dogs.”

Exactly how probiotics work to maintain a happy dog is still being studied, but scientists think they’re on to a promising theory.

Stress Hormones and Stressed-Out Pups


As pet parents, we know that sometimes our dogs seem to “think” with their stomachs, and perhaps we’re not so far off from the truth. Scientists have actually found a link between a dog’s gut microbiome—the types of bacteria in his tummy—and what goes on in his brain.

“The gut-brain axis, as scientists call it, means a dog’s gut health and mood may be directly interconnected,” Dr. Liff says.

But just how can the content of your pup’s stomach affect what’s behind his peepers, and vice versa?

For one, some hormones that can spike during stressful behaviors—cortisol being the main stress hormone—are actually influenced by gut health.

“Not only can anxious dogs show gastrointestinal upset as a main symptom of stress, but dogs with a healthy gut biome—or the types of bacteria in the GI tract—may actually have lower levels of the stress hormone cortisol, and thus feel calmer and exhibit reduced stressful behaviors,” Dr. Liff explains.

How Probiotics Can Help


Probiotics have been shown to help establish a healthy balance of friendly bacteria in a dog’s GI tract, which can shorten the duration of enteritis—or inflammation of the gut, Liff says. Less inflammation means more sound digestion. And what dog wouldn’t be happier about that?

Probiotics also help power doggy tummies to absorb more nutrients from foods, like B vitamins such as thiamin, which has been shown to play a role in mood regulation in dogs and humans alike.

Think about it like an assembly line of “good bacteria workers” toiling around the clock, getting all the good stuff in, and taking all the not-so-good stuff out—which adds up to a happier dog, bowl after bowl.

Choosing a Mood-Enhancing Probiotic for Your Pooch


The best thing is, probiotics are easy to include as part of your dog’s daily diet by simply adding them to his food. But when it comes to choosing a probiotic, there are some things to keep in mind, according to Dr. Liff.

“Although the exact dosing of probiotics for dogs is not well established, some studies suggest that higher doses of probiotics seem to add up to more clinically significant results,” she says. “And you also want to look for canine-specific probiotics, which are beneficial bacteria specially-selected for safety and efficacy in dogs.”

Picking out a probiotic dog supplement that contains a high dose of the good bugs means looking for one with a high CFU on the label. CFU stands for colony forming units—which is the amount of good bacteria that will make it to the gut, set up shop and start doing their thing. Dr. Liff recommends a probiotic with at least 1 billion CFU’s per serving.

Probiotic dog supplements, like K9 POWER Digest Forte dog supplement, not only help support digestive and immune health, but also your dog’s mood. You can give probiotics daily to help maintain a mood-balancing and health-enhancing canine gut flora, as well as during stressful times for your pooch, like while traveling or moving. With all those “good bugs” in his tummy, all he’ll need now is a good tummy rub.

Attributions


Chewy Editorial

Chewy Editorial

Related articles
  • Can Dogs Eat Turkey?
    Can Dogs Eat Turkey?

  • Can Dogs Eat Dandelions?
    Can Dogs Eat Dandelions?

  • Can Dogs Have Cinnamon? Is Cinnamon Toxic to Dogs?
    Can Dogs Have Cinnamon? Is Cinnamon Toxic to Dogs?

  • Can Dogs Eat Eggs?
    Can Dogs Eat Eggs?
  • Our experts are available 24/7:We're here 24/7:
  • 1-800-672-4399
  • United States
  • About
  • Investor Relations
  • Affiliates
  • Jobs
  • FAQs
  • Learn
  • Give Back
  • Gift Cards
  • Sell on Chewy
Download iOS appDownload Android app
Go to ACHC pharmacy accreditationLegitscript ApprovedCompounding Pharmacy Approved
  • Copyright © 2025, Chewy, Inc.
  • Terms of Use
  • Privacy Policy (Updated Oct 8, 2024)
  • Interest-Based Ads
  • Accessibility
  • California Supply Chains Act
  • Vendor Compliance
Download phone image
Get the Chewy app
Download iOS appDownload Android app
We're here 24/7
1-800-672-4399
United States
Copyright © 2025 Chewy, Inc.
Terms-Privacy (Updated Oct 8, 2024)-Accessibility
California Supply Chains Act-Vendor Compliance
About-Investor Relations-Jobs-Learn
Give Back-Gift Cards-Sell on Chewy
Skip to searchSkip to main content
Not in the U.S?

Not shopping in the U.S. or plan on shipping to a Canadian address?

Continue to Canada site
Use App
24/7 HelpHelp
Get help from our experts 24/7
1-800-672-4399
    • Track Order
    • -
    • FAQs
    • -
    • Contact Info
    AccountAccount
    Sign InNew Customer? Start here
    • Account
    • Orders
    • Manage Autoship
    • Favorites
    • Buy Again
    • Prescriptions
    • Pet Portal
    • Connect with a Vet
    • Pet Insurance Dashboard
    • My Rescues
    • Create a Pet Profile
    CartCart
    Your cart is empty.
    Something missing? Sign in to see items you may have added from another computer or device.
    Not in the U.S?

    Not shopping in the U.S. or plan on shipping to a Canadian address?

    Continue to Canada site
    Use App
    24/7 Help
    Get help from our experts 24/7
    1-800-672-4399
      • Track Order
      • -
      • FAQs
      • -
      • Contact Info
      AccountAccount
      Sign InNew Customer? Start here
      • Account
      • Orders
      • Manage Autoship
      • Favorites
      • Buy Again
      • Prescriptions
      • Pet Portal
      • Connect with a Vet
      • Pet Insurance Dashboard
      • My Rescues
      • Create a Pet Profile
      CartCart
      Your cart is empty.
      Something missing? Sign in to see items you may have added from another computer or device.
      Food
      • Dry Food
      • Wet Food
      • Fresh Food & Toppers
      • Veterinary Diets
      • Shop by Health Condition
      • Puppy Food
      Treats
      • Bones, Bully Sticks & Naturals
      • Soft & Chewy Treats
      • Dental Treats
      • Biscuits & Cookies
      • Long-Lasting Chews
      • Jerky Treats
      • Freeze-Dried & Dehydrated
      Toys
      • Plush Toys
      • Chew Toys
      • Fetch Toys
      • Treat Dispensing Toys
      • Puzzle Toys
      • Rope & Tug Toys
      Supplies
      • Crates, Pens & Gates
      • Beds
      • Leashes, Collars & Harnesses
      • Bowls & Feeders
      • Clothing & Accessories
      • Carriers & Travel
      • Training & Behavior
      Dog DealsNew Dog SuppliesPet Parent SuppliesShop all Dog
      Grooming
      • Brushes & Combs
      • Shampoos & Conditioners
      • Grooming Tools
      • Paw & Nail Care
      • Ear Care
      • Skin Care
      Cleaning & Potty
      • Pee Pads & Diapers
      • Poop Bags & Scoopers
      • Cleaners & Stain Removers
      • Vacuums & Steam Cleaners
      Health & Pharmacy
      • Flea & Tick
      • Anxiety & Calming Care
      • Allergy & Itch Relief
      • Vitamins & Supplements
      • Heartworm & Dewormers
      • Pharmacy & Prescriptions
      • DNA Testing Kits
      Gift Cards
      Popular Brands
      Purina Pro Plan
      Hill's
      Blue Buffalo
      Frisco
      Royal Canin
      Bark
      Elevate your puppy's diet. Get adventure-ready with ORIJEN puppy. Shop now.
      Food
      • Wet Food
      • Dry Food
      • Everyday Favorites
      • Shop by Health Consideration
      • Veterinary Diets
      • Highest Quality Food
      • Food Toppers
      Litter
      • Clumping
      • Scented
      • Unscented
      • Natural
      • Lightweight
      Treats
      • Crunchy Treats
      • Lickable Treats
      • Soft & Chewy Treats
      • Dental Treats
      • Catnip & Cat Grass
      Toys
      • Interactive & Electronic Toys
      • Teasers & Wands
      • Balls & Chasers
      • Catnip Toys
      • Plush & Mice Toys
      Cat DealsPet Parent SuppliesShop all Cat
      Supplies
      • Litter Boxes & Accessories
      • Cat Tech & Smart Home
      • Beds
      • Carriers & Travel
      • Bowls & Feeders
      • Collars, Leashes & Harnesses
      • Grooming
      Trees & Scratchers
      • Trees & Condos
      • Scratchers & Scratching Posts
      • Wall Shelves
      • Window Perches
      Health & Pharmacy
      • Flea & Tick
      • Anxiety & Calming Care
      • Allergy & Itch Relief
      • Vitamins & Supplements
      • Urinary Tract & Kidneys
      • Pharmacy & Prescriptions
      • Test Kits
      Gift Cards
      Popular Brands
      Tiny Tiger
      Shop Blue Buffalo
      Shop litter robot
      Shop Temptations
      Shop Hill's Science Diet
      Shop Purina Pro Plan
      Help support their urinary health with Royal Canin Urinary nutrition. Shop now.
      Horse
      • Feed
      • Treats
      • Health & Wellness
      • Vitamins & Supplements
      • Fly Control
      • Prescription Medications
      • Vaccines
      Chicken
      • Feed
      • Treats
      • Nesting & Egg Supplies
      • Coops & Runs
      • Feeders, Waterers & Deicers
      Farm Animal
      • Cattle
      • Goat
      • Pig
      • Sheep
      • Llama & Alpaca
      Wild Bird & Wildlife
      • Wild Bird
      • Squirrel & Critter
      • Duck & Waterfowl
      • Deer
      Small Pet
      • Rabbit
      • Guinea Pig
      • Hamster
      • Ferret
      Pet Bird
      • Food
      • Treats
      • Toys & Perches
      • Litter & Nesting
      • Cages & Accessories
      Fish
      • Tanks & Aquariums
      • Food
      • Filters & Media
      • Decor & Substrate
      • Water Care
      Reptile & Amphibian
      • Live Feed
      • Food & Treats
      • Tanks & Terrariums
      • Heating & Lighting
      • Substrate & Bedding
      Gift Cards
      Popular Brands
      Shop Buckeye
      Shop Animed
      Shop Cosequin
      Chewy Chick Days deals. Save on feed & supplies for every life stage. Shop now.
      Prescriptions
      Order your pet's prescription items.
      How it works
      Shop all Pharmacy
      Health Services
      Chewy Vet Care
      Chat free with our vet team
      CarePlus Insurance & Wellness Plans
      Compounded Medications
      Choose from a variety of flavors, strengths, and forms for your pet or horse.
      Learn about compounding
      Dog
      • Flea & Tick
      • Heartworm
      • Pain Relief & Arthritis
      • Antibiotics
      • Allergy Relief
      • Anxiety & Calming
      • Ear & Eye Care
      • Diabetes Care & Insulin
      Cat
      • Flea & Tick
      • Dewormers & Parasiticides
      • Ear & Eye Care
      • Antibiotics
      • Allergy Relief
      • Urinary Tract & Kidneys
      • Pain Relief & Arthritis
      • Diabetes Care & Insulin
      Horse
      • Anti-inflammatory & Musculoskeletal
      • Vitamins & Electrolytes
      • Skin & Coat Care
      • Antibiotics
      • Metabolic & Endocrine
      • Allergy & Immune
      • Behavioral Support & Sedatives
      • Reproductive Care
      Expert Health Tips
      • PetMD
      Connect with a Vet
      Free chat or live-video advice from our licensed veterinary team.
      Learn more
      CarePlus Insurance & Wellness Plans
      Give your pet the best possible health coverage with wellness and insurance plans.
      Learn more
      Chewy Vet Care
      Exceptional in-person routine and urgent care from our compassionate veterinary teams.
      Schedule a visit
      Learn
      How We Give Back
      We've donated more than $100M in products to rescue animal centers.
      Learn more
      Donate to a Rescue
      You can help us make an impact by donating items to your local shelter.
      Find a Rescue
      Find Pets to Adopt
      Search thousands of pets from shelters and rescues in Chewy's network.
      Find Pets
      Join Our Network
      Join our network to access benefits and resources that’ll help more pets.
      Join Now
      Today's Deals