What are the first signs a dog is getting old?

Common early signs include slowing down or stiffness after rest, greying around the muzzle, changes in sleep, reduced hearing or vision, and small shifts in appetite or bathroom habits.

When should I take my senior dog to the vet?

Call your vet promptly for sudden appetite loss, trouble breathing, collapse, repeated vomiting or diarrhea, a fast-growing lump, or any change that comes on quickly. For gradual changes, note them and raise them at a regular check-up.

Caring for a senior dog

Senior dog signs checklist: 8 changes worth noticing

By Gomi's human — written from 11+ years alongside Gomi (@gomithesuperyorkie), not a vet's office · Last updated July 20, 2026 · about a 5-minute read

Gomi on an autumn walk, sitting among fallen leaves in a striped sweater — Gomi on an autumn walk. The signs this checklist covers are rarely dramatic — a little more grey, a slightly slower morning, a longer nap in the afternoon sun. They're easy to miss day to day, and obvious only when you line up photos a few years apart. That's exactly what the weekly glance below is for.

Aging in dogs rarely arrives with a single dramatic moment. It shows up in small ways — a slower climb up the stairs, a longer nap in the afternoon sun. This gentle checklist helps you notice the changes that matter, so you can keep your dog comfortable through their golden years.

Part of our complete guide to caring for a senior dog.

None of these signs mean something is wrong on their own — many are a normal part of getting older. But noticing them early lets you adjust your dog's comfort and mention anything worth watching to your vet. First, it helps to know roughly where your dog is on their timeline: our dog age calculator estimates their age in human years, and larger breeds tend to reach these stages sooner (here's why big dogs age faster).

There's a practical reason to make this a habit rather than a worry. Veterinary bodies consider a dog "senior" once they reach roughly the last quarter of their expected lifespan, and they recommend twice-yearly check-ups from that point precisely because early, treatable changes are easy to miss at home (AVMA: caring for senior pets). A weekly glance at this list is how you catch those changes between visits.

The 8-point senior dog checklist

Mobility & stiffness. Slower to stand, hesitation on stairs, reluctance to jump, or stiffness after resting — often the first sign of aging joints.
Energy & sleep. Sleeping more during the day, tiring faster on walks, or restlessness at night.
Appetite & weight. Eating more or less than usual, or a gradual gain or loss of weight without a change in food. (Why a senior dog stops eating →)
Bathroom habits. Drinking more water, more frequent urination, accidents indoors, or straining.
Vision & hearing. Bumping into furniture, a cloudy or bluish tint to the eyes, or not responding to their name or familiar sounds.
Lumps, skin & coat. New lumps or bumps, a duller coat, dry or flaky skin, or new grey around the muzzle and eyes.
Mouth & breath. Bad breath, difficulty chewing, dropping food, or red and swollen gums — dental issues are common and treatable.
Behavior & mood. More clingy or more withdrawn, confusion, staring at walls, pacing, or changes in how they greet you.

A calm, practical habit: pick one quiet moment each week to run through this list. Small changes are easy to miss day to day, but a weekly glance makes patterns clear. Our free Tiny Changes checklist and the Golden Days journal are built for exactly this.

How to use the checklist

You don't need to act on every item — you need to notice. When you spot a change, jot down what you saw and when it started. A single off day usually isn't a concern; a pattern that builds over weeks is worth mentioning to your vet. Bringing a short written note (or a phone video of, say, a stiff walk) to a check-up helps your vet far more than trying to remember it in the exam room.

Adjust for comfort as the golden years arrive

Softer, easy-to-reach bedding and rugs over slippery floors help stiff joints.
Shorter, more frequent walks instead of one long one.
More frequent vet check-ups — many vets suggest twice a year for seniors.
Patience with accidents and confusion; they're rarely the dog's "fault."

Call your vet promptly — don't wait for the next check-up — if you notice: sudden appetite loss, trouble breathing, collapse or extreme weakness, repeated vomiting or diarrhea, a lump that grows quickly, pale gums, or any change that appears suddenly. When in doubt, a quick phone call is always worth it.

Frequently asked questions

What age is a dog considered a senior?

It depends on size. Small dogs are often considered senior around 9 to 11 years, while large and giant breeds may be senior by 6 or 7. Watching for changes matters more than a fixed birthday — you can estimate your dog's stage with our age calculator.

Are these signs always a sign of illness?

No. Many are a normal part of aging. The goal of the checklist is awareness, not alarm — it helps you support your dog and know when a change is worth a professional look.

How often should I check?

A weekly glance is plenty for most dogs. If your dog is managing a health condition, your vet may suggest keeping closer notes.

This checklist is general information and companionship — it is not veterinary advice or a diagnosis. Always talk to your own vet about your dog's health.

Estimate your dog's age in human years