Understanding Your Dog's Biological Age vs. Calendar Age
When a client tells me their dog is eight years old, that number gives me a starting point. But it...
Health & Longevity
Science-backed insights for a longer, healthier life with your dog.
Exercise and Longevity: How Much Movement Your Senior Dog Actually Needs
Every senior dog who comes through my foster home gets assessed for one thing before anything else: how do they...
The Gut-Longevity Connection: Why Your Dog's Microbiome Matters for Aging
I'll admit it: when I first heard that gut bacteria could influence aging, I was skeptical. Gut health felt like...
How Sleep Quality Affects Your Dog's Cellular Repair and Aging
Over years of clinical practice, sleep is one of the most overlooked aspects of canine health. Owners notice when their...
Rapamycin, NMN, NR: Comparing the Longevity Molecules Being Studied in Dogs
The canine longevity space is buzzing with excitement about several molecules that could help dogs live longer, healthier lives. But...
The Longevity Stack: What Informed Dog Owners Are Combining for Results
In the human longevity space, the concept of a "stack" is well-established. It refers to a carefully chosen combination of...
Caloric Restriction vs. Supplementation: Two Approaches to Dog Longevity
In the world of longevity science, caloric restriction (CR) holds a special place. It's the oldest, most replicated intervention shown...
Why Large Breed Dogs Age Faster (and What Owners Can Do About It)
When I first started fostering dogs, I noticed something that puzzled me. The small dogs who came through my door...
Oxidative Stress in Dogs: The Silent Driver of Premature Aging
Every breath your dog takes generates energy. And every breath also produces a small amount of collateral damage in the...
Can You Actually Extend Your Dog's Life? Here's What Science Says
This is the question at the heart of everything we cover at Grey Muzzle Mag, and it deserves an honest...
The Difference Between Lifespan and Healthspan for Dogs
Last year, I fostered a 14-year-old Chihuahua mix named Pepper. On paper, Pepper was ancient. In person, she was a...
How Inflammation Accelerates Aging in Dogs (and How to Slow It Down)
In clinical practice, clinical practice reveals the effects of chronic inflammation every single day. It's the thread that connects arthritis,...