09/29/2026
🐶 DOG STRUGGLING WITH ANXIETY, REACTIVITY OR TROUBLE SETTLING? THEIR GUT MAY BE PART OF THE PICTURE. 🦠🧠
A new 2026 peer-reviewed review is shining a spotlight on something most pet parents would never connect with their dog’s behavior:
The gut microbiome.
The researchers highlight a randomized, placebo-controlled study of dogs given the specific probiotic strain Lactiplantibacillus plantarum LP815™ for four weeks.
And what changed wasn’t just their gut.
🤯 Dogs receiving LP815™ showed significant improvements in anxiety and aggression compared with placebo.
Even more interesting, activity monitors showed they settled faster after their owners left and had more consistent sleep.
And LP815™ is one of the specific strains we chose for Dr. Becker’s Primitive Probiotics™.
Why does that matter?
Because with probiotics, STRAIN MATTERS.
You can’t assume every L. plantarum—or every probiotic—will produce the same effects. The review itself points out that probiotic research varies by strain, dose and duration.
This is why we didn’t formulate Primitive Probiotics™ by simply chasing the biggest CFU number possible.
We selected specific researched strains in dogs that were designed to support the microbiome from multiple angles—including LP815™, a strain now being studied for something that goes far beyond digestion.
🦠 GUT → BRAIN → BEHAVIOR 🧠🐶
For years, most pet parents have thought about probiotics for p**p and digestion.
Now scientists are investigating how specific probiotic strains may also influence the gut–brain axis, behavior, stress and sleep. And that’s a fascinating new chapter in canine microbiome research.
👇 Want to learn more about Dr. Karen Becker’s Primitive Probiotics™?
Comment “BETTERBELLY” and we’ll send you the link.