A cat who no longer jumps onto the counter, bed, or windowsill is often telling you her joints hurt. Degenerative joint disease is very common in older cats and easy to miss, because cats adapt instead of limping. Start with a vet exam, change the home layout, then consider a supplement labeled for cats with your vet's agreement.
Why cats hide joint pain
Dogs with sore joints often limp. Cats rarely do. Instead they edit their routines: the leap to the top of the bookcase stops, the cat waits on the floor instead of jumping onto the bed, or she starts using a chair as a halfway step. Owners often put it down to age or a calmer personality.
Veterinary studies using radiographs have found joint changes in a large share of older cats, far more than are ever diagnosed. Part of the gap is that cats are both small and stoic. Part is that the signs look like ordinary aging.
VCA Animal Hospitals' overview of degenerative joint disease in cats describes the condition, the subtle signs owners report, and the treatment approaches vets use, and it is worth reading before an appointment.
Signs that go with fewer jumps
Jumping is the headline, but several other changes tend to travel with it:
- Jumping down more carefully, or in two stages
- Less grooming over the lower back and hips, leading to a scruffy or matted rump
- Accidents just outside the litter box, often because stepping over a high side hurts
- Overgrown claws from less scratching
- Irritability when picked up or brushed over the back
- More time sleeping in one spot, less patrolling
Try a simple test at home. Put a favorite treat on a surface your cat used to reach easily and watch how she approaches it. A healthy cat springs up in one smooth motion. A cat with sore joints often looks up, hesitates, shifts her weight, and then either gives up or takes a route via a chair. That moment of calculation is one of the most reliable signs owners can see.
A simple checklist questionnaire, filled in at home over a week, helps your vet see the pattern. Cats often behave differently in the clinic, so your notes and short videos carry real weight.
Confirming the cause with your vet
Fewer jumps can have other causes: weight gain, vision loss, an overactive thyroid that causes weakness, diabetes affecting the hind legs, or an injury. Your vet will usually examine each joint, watch your cat move around the room if she will cooperate, and may suggest radiographs.
Check with your vet before giving any pain medication or supplement. Many human pain relievers are toxic to cats, and even some dog products are unsafe for them. Cats also process certain compounds differently from dogs, which is why species labeling matters so much.
If your vet confirms joint disease, the plan typically combines home changes, weight management, and pain control where needed. A supplement can be part of that plan, not a replacement for it.
Home changes that help most
Weight deserves a mention of its own. An overweight cat carries extra load on every joint, and losing even a pound can be a significant percentage of a cat's body weight. Weight loss in cats must be slow and supervised, because rapid weight loss can trigger serious liver problems, so ask your vet for a plan rather than simply cutting portions.
Small changes often bring back behaviors owners thought were gone. A cat with a ramp to the bed may start sleeping with you again within days. Keep play in short bursts with toys at floor level, which keeps muscles working without high leaps.
Choosing a joint supplement for a cat
Look for these points on any product:
- Clearly labeled for cats, not just dogs.
- A short ingredient list, so you know exactly what your cat is getting.
- Directions that cover your cat's weight, or a clear way to ask the maker.
- A format your cat will eat; many cats accept powders mixed into wet food.
- No ingredients your cat cannot have, such as shellfish for an allergic cat.
Super Snouts Joint Power is a single-ingredient New Zealand green-lipped mussel powder, described as cold processed and lipid stabilized, and the product page says it is for cats and dogs. The label direction is one scoop per 25 pounds of body weight daily, sprinkled on food, with the amount doubled for the first ten days. That direction is written in 25-pound units, which is larger than almost any cat, and the page does not break out a smaller amount. Ask your vet how much to give for your cat's weight before you start.
Mix the powder into a small portion of wet food your cat already likes, so the first taste is familiar. Cats are cautious about new smells, and a little at a time over several days usually works better than a full portion on day one. Keep weighing your cat every few weeks, because weight loss in an older cat is always worth reporting.
Questions about cats and joint support
At what age do cats start getting arthritis?
Joint changes become common from middle age onward and are very frequent in senior cats. Cats with past injuries or extra weight can show signs earlier.
Can I give my cat my dog's joint supplement?
Only if the product is labeled for cats and your vet agrees on the amount. Many dog products contain ingredients or amounts that are not appropriate for cats.
Will my cat start jumping again?
Some cats return to favorite spots once pain is managed and the home is adjusted. Steps and ramps often bring back more than people expect.
Is green-lipped mussel safe for cats?
Some green-lipped mussel products are labeled for cats. Avoid it in a cat with a shellfish allergy, and agree the amount with your vet first.
How long before I see a difference?
Joint supplements are usually judged over several weeks. Home changes often show results sooner, which is a good reason to start there.
Related reading: What to Look for in a Green-Lipped Mussel Supplement for Dogs; Fish Oil or Green-Lipped Mussel: Which Omega-3 Source Fits Your Dog?