When Your Cat Hits Double Digits
Your cat crosses into senior territory around age 10, but you won't wake up to a completely different animal. The changes sneak up gradually — a slightly stiffer jump onto the counter, longer afternoon naps, maybe some grumpiness about being picked up.
Most Canadian vets consider cats seniors at 10 and geriatric at 15. But cats age at different rates depending on breed, size, and health history.
Their Body Actually Works Differently Now
Senior cats process food, medications, and even stress differently than younger cats. Their kidneys filter waste less efficiently, their immune system responds more slowly to threats, and their joints lose cartilage.
The metabolism slows down significantly. A 12-year-old cat needs about 20% fewer calories than they did at age 5, even if they seem just as active.
Their senses dim too. Most senior cats develop some hearing loss, and their night vision isn't what it used to be. That might explain why your once-graceful cat now bumps into furniture in dim light.
Food Becomes More Complicated
Senior cats often need wet food, even if they've been kibble cats their whole lives. Dry food becomes harder to chew with worn teeth, and wet food helps with hydration since their thirst drive weakens with age.
But they also become pickier eaters. A cat who ate anything you put down might suddenly turn their nose up at their usual brand. Sometimes this signals dental pain, sometimes it's just age-related taste changes.
Weight management gets tricky. Some senior cats lose weight despite eating normally — often a sign of underlying health issues. Others gain weight because they're less active but eating the same portions. Cat not eating becomes a more serious concern in senior cats since they can't afford to lose much weight.
The Vet Schedule Changes Completely
Senior cats need checkups every 6 months instead of annually. That sounds expensive, but catching problems early often costs less than treating advanced disease.
Blood work becomes routine — usually a complete panel including kidney and liver function, thyroid levels, and blood sugar. Many Canadian vets recommend baseline bloodwork at age 10, then annual monitoring after that.
Dental care often becomes urgent. Years of plaque buildup finally catch up, and dental disease can cause serious health problems beyond bad breath. But anesthesia becomes riskier with age, so timing matters.
Their Behavior Shifts in Subtle Ways
Senior cats sleep more — up to 18 hours a day compared to 12-16 in younger cats. They also become less social, preferring quiet spots over busy household areas.
Many become more vocal, especially at night. Sometimes this signals cognitive changes similar to dementia in humans. Other times it's just hearing loss — they can't hear themselves purr, so they meow louder.
Litter box habits might change. Arthritis makes it harder to climb into high-sided boxes, and some senior cats develop preferences for different litter textures.
The Health Problems Nobody Warns You About
Kidney disease hits about 30% of cats over age 10. It develops slowly and often shows no symptoms until significant damage occurs. That's why bloodwork becomes so important.
Hyperthyroidism shows up in roughly 10% of senior cats. Weight loss despite good appetite, hyperactivity, and excessive vocalization are classic signs. It's treatable but requires ongoing management.
Arthritis affects most cats over 12, but they hide it well. You might notice less jumping, reluctance to use stairs, or eliminating outside the litter box because it hurts to climb in.
The symptom checker on The Pawfect Pup helps sort through these overlapping signs — many senior cat health issues look similar in early stages.
What Actually Helps Them Age Better
Routine matters more as cats age. They handle schedule changes poorly, so try to feed, medicate, and interact with them at consistent times.
Environmental modifications make a huge difference. Lower-sided litter boxes, ramps to favorite perches, and softer bedding help arthritic cats stay comfortable. Night lights help with failing vision.
Mental stimulation stays important. Senior cats still need play, just gentler versions. Puzzle feeders, catnip, and interactive toys designed for older cats keep their minds active.
When to Worry vs Normal Aging
Some changes are normal — sleeping more, moving slower, being less social. But sudden appetite loss, dramatic weight changes, or new breathing patterns need attention quickly.
According to International Cat Care, senior cats should still groom themselves, use the litter box consistently, and show interest in their surroundings. Loss of these basic behaviors usually signals health problems rather than normal aging.
Trust your instincts. You know your cat better than anyone. If something seems off, even if you can't pinpoint what, don't wait for the next scheduled vet visit.
The Money Reality
Senior cat care costs more. Between increased vet visits, prescription diets, medications, and potential emergency treatments, expect your yearly cat expenses to roughly double after age 10.
Veterinary costs in Canada vary by region, but senior wellness exams typically run $200-300, and diagnostic bloodwork adds another $150-250. Dental cleanings can hit $800-1200 once anesthesia and extractions are included.
But early intervention saves money long-term. Catching kidney disease early might mean years of management with diet and supplements instead of expensive emergency treatments later.