Senior dog care: the complete guide
Senior dog care — biannual vet checks, mobility, cognitive change, nutrition, quality of life, and how to spot the conditions that show up after age 7.
"Senior" starts earlier than most owners realise. Giant breeds are senior at 5; large breeds at 6–7; medium and small breeds at 7–9; toy breeds at 9–10. The shift matters because the diagnostic threshold drops — what was a "wait a week and see" symptom in an adult is a "vet this week" symptom in a senior.
The single highest-leverage shift in senior care is **biannual rather than annual wellness exams**. The body changes faster after 7. Bloodwork twice yearly catches kidney, liver, thyroid, and diabetic changes when they are still reversible or stabilisable, not when they are end-stage.
Most senior conditions are not curable but are highly manageable. A diabetic dog on insulin can live a normal lifespan. A dog with osteoarthritis on the right combination of weight management, joint medication, and physical therapy moves like a much younger dog. Kidney disease caught at IRIS stage 1–2 is a different prognosis than stage 4. The earlier you find it, the longer the good years.
Wellness from age 7
Twice-yearly vet exam from age 7, with bloodwork, urinalysis, and weight check at each visit. Blood pressure check from age 9. Annual chest X-ray and abdominal ultrasound is over-the-top for most but reasonable for breeds with high cancer rates (Golden Retrievers, Boxers, Bernese Mountain Dogs).
Vaccinations move to a longer cycle. Many vets now titer-test (measure existing immunity) rather than vaccinate routinely. Discuss with your vet — the answer depends on the dog's immune status and lifestyle.
Mobility and joints
Osteoarthritis is the single most common condition in senior dogs and is widely under-diagnosed because dogs hide pain. Subtle signs: slower on the stairs, less keen on the morning walk, stiff for the first 5 minutes after rest, reluctance to jump on furniture they used to manage.
Treatment is layered: weight control (the highest-impact single intervention), joint-supportive diet, joint supplements (omega-3, glucosamine — modest evidence), monthly injectable therapies (Cartrophen/Zydax — strong evidence), oral NSAIDs (very effective, regular monitoring needed), and physical therapy / hydrotherapy.
Home changes that matter: non-slip rugs on hard floors, a ramp or steps for the car and bed, a thick orthopaedic bed, gentle daily exercise rather than weekend warrior bursts.
Cognitive change
Canine cognitive dysfunction is the dog equivalent of Alzheimer's and affects a substantial share of dogs over 11. Signs: disorientation in familiar spaces, altered sleep cycles (awake at night, asleep all day), changes in interaction (less greeting, more clingy), house-training breakdown, blank staring.
Early intervention slows progression: diet (high in omega-3, antioxidants, MCT oil — there are specific senior diets formulated for cognition), environmental enrichment (food puzzles, gentle short walks, social engagement), and a vet-prescribed medication (selegiline) for moderate cases.
Nutrition in the senior years
Many senior dogs lose muscle mass while gaining fat — the body composition shifts even when total weight stays the same. Adequate protein (often 25–30% on dry matter, more than typical "senior" foods provide) preserves muscle. Calories often drop with reduced activity.
Tailor to underlying conditions: kidney disease needs reduced phosphorus and moderate protein; joint disease benefits from omega-3 enrichment; cognitive change benefits from MCT oil and antioxidants. A vet or veterinary nutritionist can guide the choice.
Hydration matters more in seniors. Add water to dry food; offer wet food alongside; multiple water bowls in different rooms.
Quality of life and end-of-life
Hard conversation, but worth having calmly while the dog is well. Quality-of-life scales exist (the most common is the HHHHHMM scale — Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, More good days than bad). Score weekly during decline; the pattern is more revealing than any single day.
Most owners regret holding on too long, not too short. Vets and palliative-care specialists can guide pain management, home hospice, and the timing of euthanasia. When the time comes, a home euthanasia is often available and more peaceful than a clinic visit.
Care checklists
Twice yearly
- Wellness exam, bloodwork, urinalysis, weight, body condition
- Blood pressure check from age 9
- Dental exam
- Discussion of any subtle changes you have noticed at home
Monthly
- Heartworm + flea + tick prevention
- Body check — lumps, weight, coat
- Mobility check — any new stiffness or hesitation?
- Cognitive check — any disorientation, sleep change, or interaction change?
Daily
- Tooth brushing or VOHC dental chew
- Joint supplement / prescribed medication
- Gentle low-impact exercise — short walks, not weekend marathons
- Quality-of-life observation (if approaching end-of-life)
Red flags — see a vet today
- New cough, especially at night or after lying down (heart disease)
- Sudden increased thirst and urination (diabetes, kidney disease, Cushing's)
- Weight loss without diet change
- Lumps that grow or change
- Sudden behavioural change (often pain or cognitive)
- Collapse or fainting
- Vomiting or diarrhoea persisting more than 24 hours
- Pale gums, weakness, distended abdomen
Frequently asked questions
When is my dog officially "senior"?
It depends on size. Giant breeds: 5. Large: 6–7. Medium: 7–9. Small: 8–10. Toy: 9–10. Switch to twice-yearly vet exams when you reach that age.
Should I add joint supplements?
Omega-3 (fish oil) has good evidence; glucosamine-chondroitin has weaker but still positive evidence. Both are reasonable from middle age. Don't over-supplement — talk to your vet about the right combination, especially if your dog is on prescription medications.
My dog is slowing down — is that just age?
Maybe, but more often it is treatable pain. Don't accept "slowing down" as a sentence — most senior dogs who are slowing have arthritis or hidden dental disease that can be substantially improved.
How do I know when it's time?
Use a quality-of-life scale (HHHHHMM). Track weekly. When more days are bad than good, when basic dignity (continence, mobility, eating, interest) is gone or going, talk to your vet about palliative care or euthanasia. Most owners regret waiting too long.
Is anaesthesia safe for older dogs?
Modern protocols are safe for healthy seniors. Pre-anaesthetic bloodwork, IV fluids, and tailored anaesthetic drugs make the risk acceptable for procedures like dental scaling that improve quality of life.