Probiotics are increasingly being recognized as a vital component of preventative care for dogs, offering a wide range of benefits that extend far beyond simple digestive health. Advertisements frequently highlight their role in boosting healthy gut bacteria essential for digestion, and they are a well-established therapy for diarrhea and gastrointestinal upset. However, recent research has uncovered their potential to positively impact urinary tract infections, immune system disorders, and even anxiety in dogs.
One of the most exciting discoveries is the impact of probiotics on canine mental health. The gastrointestinal tract and the brain of a dog are in constant communication. When the intestines host the right microorganisms, it can significantly aid in emotional and mental regulation.
A prime example is the bacterium Bifidobacterium longum, specifically strain BL999. Dr. Ragen T.S. McGowan, a pet behavior researcher for Nestlé Purina, shared findings indicating that dogs supplemented with BL999 exhibited less distress-related behaviors such as barking, jumping, spinning, or pacing. These dogs were also more inclined to explore new environments, suggesting improved confidence and reduced anxiety.
Choosing the Right Probiotic Supplement
Probiotics are available as nutritional supplements and are also found naturally in live cultures like yogurt. When selecting a probiotic product, it’s crucial to examine the label carefully. Look for an expiration date, the exact species of bacteria, the number of microorganisms present, and a guarantee for the quantity of live organisms. Reputable manufacturers should be able to provide supporting evidence for their product’s efficacy, ideally through studies conducted by external, accredited researchers.
Dr. Joseph J. Wakshlag, a professor of clinical nutrition and sports medicine and rehabilitation, recommends specific products that have demonstrated efficacy through studies. He suggests Fortiflora and Proviable as reliable options. For dogs suffering from irritable bowel disease, VSL#3 may also be beneficial.
Probiotics are measured in Colony Forming Units (CFUs). The current veterinary recommendation for dogs ranges from 1 to 10 billion CFUs per day. Most dogs readily accept probiotics when mixed with their food. If your dog is a picky eater, probiotics in capsule form can be easily hidden within a favorite treat.
Integrating Probiotics into Your Dog’s Routine
Probiotics can be administered proactively to help manage anticipated stressful events. If your dog will be staying at a boarding facility during your vacation or if you are planning a move, starting probiotic supplementation several days in advance can help ensure your dog’s gastrointestinal tract is in optimal condition to cope with the changes.
Alternatively, probiotics can be given daily as a consistent part of your dog’s long-term health care regimen, supporting their overall well-being.
Supporting Digestive Health
Probiotics work to normalize the intestinal environment by altering the local acidity within the digestive tract and releasing short-chain fatty acids. This creates a less hospitable environment for harmful bacteria.
If your dog ingests pathogenic bacteria, such as Salmonella, probiotics offer a protective advantage. They help inhibit the growth of these harmful bacteria by competing for essential nutrients and resources. By increasing the population of beneficial bacteria, probiotics limit the availability of nutrients for bad bacteria, reducing their numbers to levels that your dog’s system can better tolerate.
Boosting Immune Function
A significant portion of your dog’s immune system, approximately 70%, resides in their gastrointestinal tract. This makes the gut the primary defense line against pathogens entering the rest of the body. By maintaining a balanced and healthy digestive system, probiotics enable the immune system to function effectively and respond appropriately to threats.
Safety and Considerations
Probiotics are generally considered safe for dogs. Studies supporting any given product should confirm that the probiotic does not contribute to antibiotic resistance in other bacteria and is not itself pathogenic.
However, severely immunocompromised dogs should be given probiotics with caution and always under veterinary supervision. Their delicate immune systems may struggle to manage any bacterial load, regardless of its beneficial nature.
Conditions That May Benefit from Probiotic Supplementation
- Allergies
- Anxiety
- Bad breath
- Coat quality
- Diarrhea
- Immune disorders
- Intestinal inflammation
- Irritable bowel syndrome (IBS)
- Liver disease
- Obesity
- Skin disorders
- Urinary tract infections (UTIs)
Key Probiotic Species Beneficial for Dogs
- Bacillus coagulans
- Bifidobacterium animalis (strain AHC7) – beneficial for acute diarrhea
- Bifidobacterium bifidum
- Bifidobacterium longum (strain BL999) – aids in managing anxiety
- Enterococcus faecium (strain SF68)
- Lactobacillus acidophilus – improves stool quality and frequency
- Lactobacillus casei
- Lactobacillus plantarum
- Lactobacillus rhamnosus (strain LGG) – potentially effective for diarrhea, mirroring benefits seen in humans.
Understanding Probiotics vs. Prebiotics
Probiotics are live, beneficial microorganisms that colonize your dog’s intestines. Prebiotics, on the other hand, are types of fiber that serve as food for these probiotics. Both occur naturally, but they can also be administered as supplements or added to your dog’s diet.
This article was adapted with permission from the Cornell University College of Veterinary Medicine’s DogWatch newsletter.