How Can I Tell if My Senior Dog Is Unwell?
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Written by Dr. Linda Simon MVB MRCVS, Team Vet.
Old age is not a diagnosis. Senior dogs may sleep more, move more carefully or need a different routine, but unexplained weight loss, increased thirst, bad breath, difficulty rising, behavior change or hair loss can signal treatable disease. The safest comparison is your dog's own baseline, not another dog's age.
Small changes are easier to evaluate when you record them. Weigh your dog regularly, note water and food intake, film walking and rising, and bring a medication and supplement list to appointments.
Weight loss
Unplanned weight loss is not a normal requirement of aging. Dental pain, kidney or liver disease, diabetes, gastrointestinal disease, cancer and other conditions can reduce intake or change how nutrients are used. Muscle loss over the back and hind legs may accompany chronic pain or systemic illness even when the number on the scale moves little.
Arrange an appointment if ribs, spine or hips are more prominent, a collar or harness fits differently, or appetite has changed. Weekly weight and body-condition notes are more useful than memory.
Drinking more
Warm weather and activity can increase normal thirst, but a persistent rise in drinking or urination deserves testing. Kidney disease, diabetes, Cushing's disease, infection and medication effects are among many possibilities. Do not restrict water unless a veterinarian specifically directs it.
Measure the bowl for several days if practical and note accidents, nighttime requests, urine volume and color. Increased thirst plus vomiting, weakness or inability to keep water down needs prompt advice.
Sleeping all the time
Senior dogs often rest longer, yet a dog that no longer greets the family, struggles to wake, pants at rest or avoids normal activities may be painful or ill. Joint disease, heart disease, anemia, endocrine disease and cognitive decline can all change sleep and energy.
New nighttime pacing, staring, getting stuck, house soiling or reversed sleep patterns can occur with canine cognitive dysfunction, but pain and medical causes must be assessed too.
Bad breath
Strong or suddenly worse odor can accompany periodontal disease, a broken tooth, an oral mass or another medical problem. Look for dropping food, chewing on one side, pawing at the mouth, bleeding, facial swelling or reluctance to eat. Do not scrape tartar at home or use human toothpaste.
Dental disease is painful and may be hidden below the gumline. A veterinary oral assessment determines whether professional cleaning, dental X-rays or treatment is needed.
Slowing down
A senior dog may not sprint like a puppy, but struggling to rise, slipping, avoiding stairs, shortening walks or lagging behind can reflect arthritis, neurologic disease, heart or lung disease, weakness or pain. Video the dog walking from the side and behind on a nonslip surface.
Provide traction, keep nails and paw hair managed, use a supportive harness when advised and avoid forcing exercise through pain. Prescription pain management and rehabilitation can make a major difference after diagnosis.
Fur loss
Gray hair and some coat texture change can come with age. True bald patches, symmetrical thinning, inflamed skin, odor, scabs or persistent itching are not simply old age. Hormonal disease, parasites, infection, allergy, nutrition and self-trauma are possible causes.
Avoid applying essential oils, human creams or leftover pet medication. Photographs taken in the same light each week can show whether an area is expanding.
Other changes to take seriously
- Reduced appetite, vomiting, diarrhea or constipation
- Coughing, faster breathing or reduced stamina
- New lumps, wounds that do not heal or abdominal swelling
- House soiling or difficulty urinating
- Head tilt, circling, seizures or loss of balance
- Hiding, irritability, anxiety or reduced interaction
- Vision or hearing changes that affect safety
The AAHA senior care guidance emphasizes history, physical examination and appropriate diagnostic testing because senior pets can have more than one condition at the same time.
How often should a senior dog see the veterinarian?
Many senior dogs benefit from examinations about every six months, even when they seem well. The exact schedule depends on breed, size, diagnoses and medication. A visit may include a nose-to-tail exam, weight and muscle assessment, blood pressure, dental review, blood work and urinalysis.
Regular checks establish a baseline and can find disease before it causes an obvious crisis. Bring your diary and ask which changes should prompt an earlier return.
When is it an emergency?
Seek emergency care for collapse, trouble breathing, pale or blue gums, seizure, a swollen painful abdomen, repeated unproductive retching, sudden inability to stand, uncontrolled bleeding, severe pain, toxin exposure or inability to urinate. Call before traveling when possible so the clinic can prepare.
A five-minute weekly senior check
- Watch the dog rise and walk on a nonslip surface.
- Run your hands gently over the body and note new lumps or pain.
- Check appetite, water, urine and stool patterns.
- Look at the mouth without forcing it open.
- Record weight, breathing at rest and any behavior change.
This check does not replace an exam. It gives the veterinary team clearer information between appointments.
FAQs
Is sleeping more normal for an old dog?
Some increase can occur, but sudden or marked change, difficulty waking, pain, breathing change or loss of interest needs assessment.
Should I restrict water if my senior dog drinks a lot?
No. Restricting water can be dangerous. Measure intake if asked and arrange veterinary testing.
Is bad breath just part of aging?
No. Persistent bad breath commonly signals dental or oral disease and should be examined.
How do I know if slowing down is arthritis?
You cannot confirm the cause at home. Video the change and let the veterinarian examine the joints, muscles, heart, lungs and nervous system.
This article provides general educational information and does not replace an examination or emergency veterinary care.