Longevity

A criticalist explains what a murmur means, what CoQ10 does and does not do, and what workup comes first.

Older dogs show taurine deficiency as fading stamina, cough, and heart changes. Learn the signs, risks, and next steps.

Learn how a 9-point body condition score predicts lifespan, joint load, and healthy aging in active dogs.

How the largest dog aging cohorts use owner surveys, activity logs, and vet records to track load, recovery, and lifespan.

Why size shapes canine lifespan and how load, weight, and recovery care support healthy aging.

A veterinarian compares how big-box and specialty dog longevity supplements differ on sourcing, dosing transparency, and verification — and names a clear winner for each priority.

A vet's evidence-first look at DHA omega-3 for aging dog cognition — what the research shows, realistic dosing ranges, and where the science stops.

A vet explains how methylcobalamin supports canine nerve conduction and myelin, when deficiency causes real neurologic signs, and where supplementation helps versus where it's cosmetic.

A vet's field guide to separating ordinary senior slowdown from canine cognitive dysfunction — what the DISHAA signs actually look like and when to act.

A vet's load-management take on NAD+ precursors, resveratrol, and quercetin in dogs — what the evidence actually supports and where the claims outrun it.

What L-carnitine actually does in a dog's muscle and heart cells, which dogs benefit most, and where the evidence stops and a vet's judgment has to start.

A dual-boarded criticalist-cardiologist walks through what the evidence actually supports for NAD+ precursors, resveratrol, and quercetin in dogs — and what it doesn't.

A load-and-recovery look at why a 90-pound Mastiff and a 9-pound terrier are running very different clocks, and how to read your own dog's trajectory instead of a generic number.

A vet's evidence-bounded answer on when to start longevity supplements for dogs, framed around load, recovery, and the "still working" question, not a magic start date.

A vet's evidence-based framework for senior dogs who have slowed down — what to rule out first, what actually moves the needle, and where the science is still thin.

A load-management explainer on when small breed dogs actually enter the senior life stage, why the old "7-year rule" misleads owners, and what to watch instead.

A veterinary neurologist walks through how to tell orthopedic hind-leg weakness from a neurologic one in dogs, what degenerative myelopathy really looks like, and when to call the vet today.

A senior dog slowing down at 8? Here is what NAD+ precursor chews can and cannot do, what the canine evidence actually shows, and how to read a label before you buy.

The early and late signs of taurine deficiency in dogs, why the heart shows it first, which breeds and diets raise the risk, and how it's tested and reversed.

A senior dog who suddenly startles at everyday sounds is usually telling you about his ears, his joints, or his aging brain. Here's how to sort out which.