Companion Animal Microbiome and Behavioral Health

Emerging evidence on how gut microbiome health influences behavioral and emotional welfare in companion animals.

Key Facts

The gut-brain axis linking intestinal microbiome to neurological function is increasingly well-documented in mammals
Dogs with anxiety and behavioral problems show altered gut microbiome profiles compared to behaviorally healthy controls
Probiotic supplementation has shown some benefit for stress-related gut symptoms in dogs
Diet quality significantly influences microbiome diversity, which in turn affects immune and neurological function
Antibiotic use in companion animals disrupts gut microbiome and may have lasting behavioral implications
Research into companion animal microbiome welfare is at an early stage but holds significant promise

Welfare Considerations

The emerging science of companion animal microbiome welfare adds a new dimension to understanding behavioral health problems in dogs and cats. If anxiety, fearfulness, and reactivity in companion animals are partly mediated by gut-brain axis dysfunction, then addressing microbiome health through diet and targeted interventions becomes a welfare consideration alongside behavioral management. The field is still developing, and recommendations for specific interventions require careful evaluation. However, the foundation of a healthy, diverse microbiome through high-quality diet and judicious antibiotic use is already aligned with best practice veterinary care.

What You Can Do

Feed companion animals high-quality diets that support microbiome diversity
Use antibiotics in companion animals only when genuinely necessary and as prescribed by veterinarians
Discuss probiotic options with your veterinarian for dogs with stress-related digestive or behavioral problems
Support research into the microbiome-behavior connection in companion animals