Dr. Tiffany Delacruz, DVM • Chief Executive Officer, RexVet • 2026-06-11 • 11 min read
Senior Dog Care: The Complete 2026 Vet Guide
When dogs turn senior by size, the wellness panel that catches disease early, diet and exercise changes, and hospice. Written by a licensed DVM.
Medically reviewed by Dr. Tiffany Delacruz, DVM
Dogs age differently than people, and they age differently from each other. A 9-year-old Chihuahua is middle-aged; a 9-year-old Great Dane is already past most of its life expectancy. This guide covers what actually changes when a dog becomes a senior, the specific health screens that matter at different stages, and how to handle the conditions that show up most often. For age-to-human-years conversion, see our dog age calculator.
When is a dog considered senior?
Body size matters more than chronological age. Larger dogs age faster — they reach reproductive maturity at the same time as small dogs but their cells age faster, life expectancy is shorter, and senior conditions arrive earlier.
- Toy and small breeds (under 20 lb): senior at 9-10 years, life expectancy 14-16
- Medium breeds (20-50 lb): senior at 8, life expectancy 12-14
- Large breeds (50-90 lb): senior at 7, life expectancy 10-12
- Giant breeds (over 90 lb): senior at 5-6, life expectancy 7-10
The senior wellness panel — what to ask for
Annual exams stop being enough once a dog is senior. Most veterinarians shift to twice-yearly exams plus an annual bloodwork panel. The baseline senior panel includes:
- Complete Blood Count (CBC) — catches anemia and infection
- Comprehensive metabolic panel — kidney, liver, blood glucose, electrolytes, plus SDMA, an earlier kidney marker
- Total T4 — thyroid screening (hypothyroidism is common in middle-aged dogs and shows up clearly here)
- Urinalysis with specific gravity — earliest kidney-disease indicator (changes show up before bloodwork)
- Blood pressure measurement — increasingly recommended for seniors, especially small breeds
- Optional: chest x-rays for large/giant breeds (cardiac screening) and senior dental imaging
Why bloodwork twice a year matters more for seniors
Chronic conditions like kidney disease and hypothyroidism progress slowly. Annual labs catch them; semi-annual labs catch them earlier — sometimes a full year earlier — which substantially improves treatment outcomes. The cost difference (one extra panel per year, typically $150-$250) is small relative to the diagnostic benefit.
The four most-missed senior conditions
Most senior care interventions fall into four buckets, listed here in order of clinical frequency. Each has clear early signs and clear modern treatment — but each is widely missed because the early signs look like "just normal aging."
1. Dental disease (affects ~70% of dogs over 8)
Periodontal disease is the single most under-diagnosed condition in senior dogs. The signs are subtle — bad breath, slight eating slowdown — and most owners assume they're just "normal aging." Severe periodontal disease can cause heart valve infection, kidney damage, and chronic pain. Anesthesia-required dental cleaning every 1-2 years is standard senior preventive care.
2. Arthritis (affects ~50% of dogs over 10)
Arthritis is widely under-treated in dogs because owners often interpret stiffness as "just slowing down with age." Modern arthritis management — joint-supplement diets, prescription NSAIDs, monoclonal antibody injections (Librela), gabapentin for breakthrough pain, weight management, and controlled exercise — can dramatically improve quality of life in arthritic senior dogs.
3. Chronic kidney disease (CKD) (affects ~30% of dogs over 10)
Early CKD is silent. The earliest indicators are loss of urine-concentrating ability on a urinalysis and a rising SDMA, both of which usually show up well before creatinine moves; there is no fixed interval. By the time creatinine rises on a standard panel, the dog has already lost 60-70% of kidney function. This is why you should ask for urinalysis with specific gravity and SDMA on the senior panel, not standard bloodwork alone.
4. Canine cognitive dysfunction (CCD) (affects ~30% of dogs over 11)
CCD is the dog equivalent of dementia. Signs include disorientation, altered sleep cycles (waking and pacing at night), changes in social interaction, house-soiling in a previously trained dog, and reduced response to commands. Early intervention (diet, environmental enrichment, selegiline) can slow progression and improve quality of life significantly.
Diet adjustments for senior dogs
Senior metabolism slows by 15-20%, so dogs gain weight on the same food they ate at 5 years old. Use our pet calorie calculator to recalibrate. Beyond calories, senior-specific dietary considerations (our senior dog food guide covers the label details):
- Lower fat (helps with weight management and reduces pancreatitis risk in predisposed breeds)
- Higher quality protein (preserves muscle mass; the old "low protein for kidney" advice has been substantially revised)
- Joint support: omega-3 fatty acids (EPA/DHA) have the strongest evidence; glucosamine and chondroitin are an optional extra with weaker evidence
- Antioxidants for cognitive support (vitamin E, selenium, beta-carotene)
- Softer texture or smaller kibble if dental disease is present
- Kidney-protective diet ONLY if veterinarian-confirmed early CKD
Exercise — the use-it-or-lose-it rule
Senior dogs need continued daily exercise to maintain muscle mass, joint health, and cognitive function. The form changes — shorter walks more frequently, swimming if arthritis allows, controlled fetch instead of high-impact running — but stopping exercise entirely accelerates decline. Aim for 30 minutes of moderate activity daily for most senior dogs.
When to consider hospice or palliative care
Quality-of-life conversations are part of senior care. Veterinarians use objective quality-of-life scales (the HHHHHMM scale: Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, More good days than bad). The conversation about end-of-life timing is one of the most important services a long-term veterinary relationship provides; it's also one of the easiest to have via telehealth once a vet-client relationship is established.
How telehealth fits into senior dog care
A licensed RexVet veterinarian can handle a large share of senior dog care via video visit ($64.99 in FL, NY, VA) — chronic-condition follow-ups, medication management, behavior changes, diet adjustments, and quality-of-life conversations. Telehealth doesn't replace the in-person twice-yearly exam (which needs hands-on palpation and dental check), but it can fill in everything between those visits and reduce the stress of frequent clinic trips for an arthritic senior dog.
The September senior-dog checklist
September is Animal Pain Awareness Month and National Preparedness Month, and it lands at a useful point in the year — after summer heat and before holiday travel and winter joint stiffness. Rather than a vague resolution to "keep an eye on" an aging dog, run the ten items below once this month and write the results down; the value is in having a dated baseline to compare against in March. Most take under ten minutes at home. For the food step, our senior dog food guide walks through what to look for on the label by condition; the pet weight calculator helps you turn a body-condition score into a target number, and the pet calorie calculator converts that target into a daily feeding amount. If you notice anything new during the cognitive step, our guide to early warning signs in senior pets covers which subtle changes are worth a call.
- Weight and body-condition check — weigh your dog (bathroom scale, with and without you) and feel for the ribs and waist tuck; log the number and date. A 5% change in either direction since spring is worth mentioning to your vet.
- Senior bloodwork and urinalysis — if the last CBC, metabolic panel, T4, and urinalysis were more than a year ago — or more than six months for a geriatric dog or one with a known chronic condition — book them now rather than at the next annual exam.
- Dental look — lift the lip on both sides in good light and check for red gums, brown tartar at the gumline, a broken tooth, or breath that has changed. Note which side your dog chews on.
- Mobility and rug/ramp audit — watch your dog get up from lying down, climb stairs, and get into the car. Add non-slip runners on hard floors, a ramp or steps for the car and bed, and raise food and water bowls if the neck is stiff (ask your vet first if your dog is a large, deep-chested breed, since raised feeders have been linked to a higher bloat risk in those dogs).
- Medication and supplement review — write out every prescription and supplement with dose, timing, and remaining count. Check expiration dates and confirm nothing is doubling up (two products with glucosamine, or an NSAID such as carprofen or meloxicam alongside prednisone, aspirin, or a second NSAID — a combination that should never happen without your vet's knowledge).
- Food recalibration — recalculate calories for the current weight and activity level, and check whether the current food still matches your dog's conditions (dental, joint, kidney, weight).
- Cognitive-change log — start a simple note on your phone: night-time pacing or waking, staring at walls or corners, getting stuck behind furniture, house-soiling, reduced greeting. Date each entry so a pattern is visible by winter.
- Quality-of-life scale baseline — score the HHHHHMM scale described above while your dog is doing well, so future scores have an honest reference point rather than a memory.
- Records and microchip check — confirm the microchip registration has your current phone number, photograph the rabies certificate and vaccine history, and save the vet's records to your phone.
- Telehealth follow-up — book a video visit to review the log, the weight trend, and the medication list with a licensed veterinarian, and to decide which findings need the twice-yearly in-person exam moved up.
Hurricane season and senior dogs in Florida, New York, and Virginia
September is the statistical peak of the Atlantic hurricane season, and the three states where RexVet's veterinarians are licensed all sit in the path — Florida for direct landfalls, coastal Virginia for landfalls and inland flooding, and New York for tropical remnants and the coastal flooding that comes with them, which close roads and clinics just as reliably as a named storm. For a young, healthy dog a storm is mostly an inconvenience. For a senior dog on daily thyroid medication, an NSAID for arthritis, a heart medication, or a kidney diet, a closed clinic and a closed pharmacy for five days is a medical problem, and the fix is timing. Refill before the storm window, not during it.
Refills by video before the storm window closes
In Florida, telehealth prescribing is governed by the Florida PETS Act (HB849): a Florida-licensed veterinarian can establish a valid veterinarian-client-patient relationship through the video visit itself and prescribe medication during that visit when clinically appropriate, subject to defined limits around controlled substances and certain edge cases — the vet will tell you on the call whether your dog's refill qualifies, and you and your dog must be physically in Florida at the time of the visit. New York and Virginia have their own telemedicine rules; the veterinarian you see is licensed in the state you are in and will tell you what can be prescribed by video. Our online prescription refill guide lists which oral and topical medications can be refilled by video; injectables such as Librela are given in clinic, so if your arthritic senior is due for one, get it on the calendar before a storm window rather than after. The hurricane-season refill playbook covers how to request a 30-, 60-, or 90-day supply and shipping timelines.
Evacuation logistics for a dog with limited mobility
Beyond medication, a senior dog's evacuation plan differs from a young dog's in one important way: a dog that cannot jump into a car or walk a mile on a leash needs its own logistics — a ramp, a carrier it fits in, a lifting harness, and a plan for getting in and out of the vehicle at every stop — which is why the checklist below is longer than the one for a healthy adult dog. Pet-friendly shelters do exist in Florida and Virginia, but they typically require a crate and proof of rabies vaccination, so those need to be ready before the order comes. The broader hurricane preparedness guide for FL, NY, and VA pet parents covers the general kit and evacuation basics for any pet.
Storm anxiety in older dogs
Storms also hit seniors harder emotionally — disorientation from sensory decline, cognitive decline, and undertreated pain all lower a dog's tolerance for barometric shifts and thunder, and a dog that was never storm-anxious can become so at 11 or 12. Our guide to storm anxiety in dogs covers management, including the safe-room and medication options worth agreeing with your vet before the season starts.
What a video visit can do when the clinic is closed
When the local clinic is closed for a storm, a $64.99 video visit with a licensed veterinarian in your state can review a new symptom, adjust a dose, decide whether something can wait for the clinic to reopen, and send a prescription where appropriate — as long as your dog is physically in Florida, New York, or Virginia at the time of the call. Before the first watch is issued, have these in place:
- At least 30 days of every medication, supplement, and prescription food on hand (the refill playbook covers 30-, 60-, and 90-day scripts), plus the same margin of the dog's regular food; prescription and kidney diets are hard to substitute on short notice.
- A refill visit booked as soon as a storm is forecast for your region — not when the last three pills are in the bottle — so shipping or pharmacy pickup lands before roads close.
- Printed copies and phone photos of the vaccine record, rabies certificate, current medication list with doses, most recent bloodwork, and your vet's contact details.
- A crate or carrier your senior dog fits in comfortably, a ramp or portable steps for the car, a non-slip mat, and a harness with a handle for lifting a dog with weak hind legs.
- A pre-identified pet-friendly destination — a friend or relative inland, a pet-friendly hotel, or a county pet-friendly shelter — and a plan for getting a dog with limited mobility in and out of the vehicle at each stop.
- A storm-anxiety plan agreed with your vet in advance (a safe interior room, white noise, and any prescribed anxiety medication already in the house), since a panicked senior dog is at real risk of falls and injury.
- A telehealth account already set up, with your pet's records saved on your phone, so a video visit takes minutes to start if the clinic is closed.
Emergency signals
When to contact a veterinarian
- Sudden behavior change (especially confusion or disorientation)
- Weight loss despite normal or increased appetite (possible thyroid, kidney, or diabetes)
- Increased thirst and urination (kidney disease, diabetes, Cushing's)
- Persistent cough (heart disease, especially in small breeds)
- Difficulty rising or going up stairs (arthritis, neurologic disease)
- Bad breath that's gotten dramatically worse (advanced dental disease)
- Reduced response to commands or recognition (possible cognitive dysfunction)
Frequently asked questions
When does a dog become a senior?
Body size determines senior status more than chronological age. Toy and small breeds (under 20 lb) become senior at 9-10 years. Medium breeds (20-50 lb) at 8. Large breeds (50-90 lb) at 7. Giant breeds (over 90 lb) at 5-6. A 6-year-old Great Dane is senior; a 6-year-old Chihuahua is middle-aged.
What blood tests do senior dogs need?
The standard senior panel includes Complete Blood Count (CBC), comprehensive metabolic panel with SDMA (kidney/liver/glucose/electrolytes), total T4 for thyroid, and urinalysis with specific gravity. Blood pressure measurement is increasingly recommended, especially for small breeds. Twice-yearly bloodwork catches chronic conditions 6-12 months earlier than annual-only screening.
How often should a senior dog see the vet?
Most veterinarians recommend twice-yearly wellness exams for senior dogs, plus annual bloodwork (or twice-yearly for advanced seniors). This is double the typical adult-dog visit frequency. Chronic conditions identified early are dramatically easier to manage.
What's the most under-treated condition in senior dogs?
Two tie — arthritis and dental disease. Both are massively under-diagnosed because owners interpret the signs (stiffness, bad breath, slight eating slowdown) as "just normal aging." Modern arthritis treatment (NSAIDs, Librela injections, weight management) and routine dental cleaning under anesthesia can dramatically improve senior quality of life.
Does my senior dog need a special diet?
Senior dogs benefit from a 15-20% calorie reduction (metabolism slows), higher-quality protein (preserves muscle mass), and joint support (omega-3 EPA/DHA first; glucosamine/chondroitin an optional extra with weaker evidence). Avoid making blanket kidney-protective diet changes without veterinary confirmation of CKD — the old "low protein for older dogs" advice has been substantially revised.
Can I see an online vet for my senior dog's chronic conditions?
Yes — telehealth handles a large share of senior dog care well: chronic-condition follow-up, medication management, behavior changes, diet questions, quality-of-life conversations, and prescription refills. RexVet's licensed veterinarians in FL, NY, and VA handle these for $64.99 per video visit. New diagnoses requiring imaging, bloodwork, or hands-on exam still need in-person evaluation.
How should I plan my senior dog's medication for hurricane season?
Keep at least 30 days of every daily medication, supplement, and prescription food on hand from August through October (the hurricane refill playbook covers 30-, 60-, and 90-day scripts), and book a refill visit as soon as a storm is forecast rather than when the bottle is nearly empty. Photograph the medication list and recent bloodwork, and confirm which refills can be handled by video in your state — injectables like Librela still require an in-clinic appointment, so schedule those ahead of a storm window.
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About the author
Dr. Tiffany Delacruz, DVM
Chief Executive Officer, RexVet
Licensed veterinarian and CEO of RexVet (Rex Vets Inc.). Practicing across Florida, New York, and Virginia via licensed telehealth. Reviews every clinical article on RexVet before publication.