07/01/2026
Det her er rigtig interessant! Dette studie viser, at angste eller reaktive hunde har anderledes tarmbakterier end hunde uden de udfordringer.
Det er spændende, hvad fremtidens forskning i tarmbakterier, kommer til at betyde for dyr og mennesker.
Recent peer-reviewed research published in Scientific Reports (Nature, 2025) found that dogs with higher anxiety and aggression scores had different gut bacteria compared to calmer dogs. This supports the idea of a gut–brain connection in dogs — meaning what happens in the digestive system may be linked to how dogs feel and react to the world.
What the study found (in simple terms):
• Dogs rated as more anxious or aggressive had distinct gut microbiome patterns
• Certain bacteria were more common in anxious dogs
• This doesn’t prove gut bacteria cause behaviour — but it shows a meaningful link
Supporting gut health may be one helpful piece of the puzzle alongside:
• Kind, non-coercive behaviour support
• Appropriate training and management
• Veterinary care (including medication when needed)
• Diet consistency and digestive health
Important: This research does not mean changing food alone will “fix” anxiety or aggression. Behaviour is complex, and dogs deserve a whole-dog approach.
Source: Pellowe, S. D., Zhang, A., Bignell, D. R. D., Peña-Castillo, L., & Walsh, C. J. (2025). Gut microbiota composition is related to anxiety and aggression scores in companion dogs. Scientific Reports, 15, 24336. https://doi.org/10.1038/s41598-025-06178-4
