Senior Dog Care: What Age Counts as Senior, 6 Signs Matched to 6 Areas, and How to Pick a Base Plus One Targeted Supplement
Short answer: senior dog care covers four areas - joints (slow to get up, hesitating on stairs), cognition (no response to their name, wandering at night), heart / eyes (tires easily, will not walk after dark) and urinary (drinking more, going to the toilet more often). The strategy: one senior multivitamin as the base, plus one targeted product for whichever problem is most obvious; you can start at 7 years (6 for large breeds) without waiting for symptoms. Any sudden change - off food, losing weight, a big jump in water intake - is not a supplement question, see your vet first.
Dogs in Hong Kong are living longer, and plenty of owners now have a dog over 10 at home. But senior care and adult care are not the same job: older dogs have more areas to cover (cognition, eyes, heart, urinary) and you want to keep the load on the gut, liver and kidneys light, so it is not simply a bigger dose of the regular version. This post starts with how old counts as old, breaks down the signs and ingredients area by area, then covers how to avoid ending up with a table full of jars.
When is a dog considered senior? Size matters too
| Size | Senior starts around | Life expectancy (median) |
|---|---|---|
| Small breeds (<10kg) | 10 years | 13-14 years |
| Medium breeds (10-25kg) | 8 years | 12 years |
| Large breeds (25-45kg) | 6-7 years | 11 years |
| Giant breeds (>45kg) | 5-6 years | 9 years |
AAHA defines senior as the last 25% of expected lifespan. Put size and age into the pet age calculator and you will see straight away which stage your dog is at.
Six signs in senior dogs, mapped to six areas
| Sign | Area | Ingredients to look for |
|---|---|---|
| Slow to get up, hesitating on stairs, sitting down mid-walk | Joints | Glucosamine + chondroitin + MSM + green lipped mussel + turmeric + hyaluronic acid (the senior all-in-one) |
| No response to their name, getting lost on familiar routes, wandering at night, sleeping more during the day and becoming restless at night | Cognition | Alpha-GPC, phosphatidylserine, algal DHA, lion's mane mushroom |
| Hesitating at stairs, will not walk after dark, bumping into things | Eyes | Lutein + zeaxanthin, astaxanthin, beta-carotene, DHA |
| Tires easily, breathing hard, stopping partway through a walk | Heart | CoQ10, Omega-3, taurine, L-carnitine (⚠️ if heart disease has already been confirmed by your vet, follow your vet's plan) |
| Drinking more, going to the toilet more often, accidents indoors | Urinary | Cranberry concentrate + D-mannose + probiotics (⚠️ a big jump in water intake needs bloodwork first to rule out kidney disease or diabetes) |
| Soft stools, eating normally but losing weight, bad breath | Gut | A senior probiotic formula + prebiotic |
If any of those six signs comes on suddenly (a clear change within a week), or comes with weight loss, going off food or a big jump in water intake, that is not a supplement question: take them to the vet for bloodwork. Bloodwork every six months for a senior dog matters more than any supplement.
Strategy: one base, one targeted product, not a table full of jars
- Base - one senior multivitamin (the 11-in-1 type), covering joints, skin, gut, immune, heart, cognition, eyes and urinary in a single chew.
- Targeted - add only the most obvious area: joint signs, add the senior joint all-in-one; cognition signs, add the cognition formula; and so on.
- Do not double up - using two products with overlapping ingredients, such as fish oil or probiotics, is a common source of duplication. Read the ingredient panel.
- Format - older dogs may find chews harder to eat. Try crumbling them into food, or choose a powder to mix into wet food.
- How long - joints, 4-8 weeks; cognition and eyes need longer (2-3 months) before assessing the results; if things improve, keep it going as maintenance rather than stopping the moment it looks better.
Beyond supplements: four everyday things for a senior dog
- Weight - metabolism slows with age and weight creeps on; every extra 1kg is more load on the joints and the heart. Use the feeding calculator to recalculate portions for the senior stage.
- Exercise - not less walking, but shorter and more often: two or three 15–20-minute walks on level ground a day, and no jumping down from heights.
- Home setup - non-slip mats, dog steps up to the sofa, a raised bowl, a night light (dogs with fading eyesight get spooked in the dark).
- Check-ups - bloodwork plus a urine test every six months; keep following the deworming and vaccination schedule, which matters even more when immunity drops with age.
Where to buy in Hong Kong
NanaPaws is an authorised Hong Kong retailer for Zesty Paws (NASC Quality Seal) from the US, and the senior range is its own line (from 7 years), not the regular version at a bigger dose:
The base: joints, skin, gut, immune, heart, cognition, eyes and urinary, eight areas in one chew, chicken / beef flavour | HK$323, free SF Express delivery on orders of HK$300 or more
Take a look →
Joint focus: triple combo + New Zealand mussel + Qmin+™ turmeric + hyaluronic acid | HK$323, free SF Express delivery on orders of HK$300 or more
Take a look →
Cognition focus: AlphaPrime® Alpha-GPC + UltraCog® phosphatidylserine + lion's mane mushroom + algal DHA | HK$303, free SF Express delivery on orders of HK$300 or more
Take a look →
Eye focus: LuteClear® lutein + zeaxanthin + astaxanthin + algal DHA | HK$323, free SF Express delivery on orders of HK$300 or more
Take a look →The senior versions for heart, urinary and probiotics, plus the NAD+ anti-ageing powder, are all in the senior dog collection. For joints in detail, see the complete guide to dog joint care; for choosing between glucosamine and mussel, see glucosamine vs green lipped mussel.
Common questions
How old is old for a dog?
It depends on size: small breeds from about 10 years, medium breeds 8, large breeds 6-7, giant breeds 5-6 (AAHA defines senior as the last 25% of expected lifespan). The age calculator, set to your dog's size, gives an estimate of their life stage.
When should a senior dog start on supplements?
You do not have to wait for symptoms. Large breeds at 6 and small to medium breeds at 7-8 can move to a senior formula as a daily base; if they are already slow to get up or slow to respond, start now.
What is the difference between a senior formula and a regular one?
Senior formulas are usually the all-in-one version: on top of the joint triple combo they add mussel, turmeric and hyaluronic acid, and the multivitamin also includes ingredients intended to support cognitive, eye, urinary and heart health. The amounts and the ingredient list are tuned for older dogs, not just the regular version at a bigger dose.
How many products does a senior dog need?
One senior multivitamin as the base is enough; add the matching targeted product only where there is an obvious issue (joints, cognition, heart). Keep the load on an older dog's gut, liver and kidneys in mind, so do not stack four or five at once.
What if a senior dog will not eat the chews?
Switch to a powder sprinkled over wet food (older teeth struggle, and powder needs no chewing), or crumble the chews into the food. The salmon and beef flavour senior formulas usually go down more easily.
NanaPaws' chief taste tester and gatekeeper. We are an authorised Zesty Paws retailer in Hong Kong, the batch expiry date is listed on every item, and Free SF Express delivery on orders of HK$300 or more. Sources: Zesty Paws product labels, NASC, and public AAHA / WSAVA guidelines.
This article is general pet care information and is not veterinary advice. Supplements are everyday support and do not replace treatment; if your dog has ongoing symptoms, please speak to your vet.
