Your Pet Might Have Hidden Osteoarthritis-Related Pain

Why osteoarthritis pain can be easy to miss in dogs, cats, and horses.

If you’ve shared your life with an animal long enough, you probably know how the realization that they’re getting older can seem to catch up with you all at once.

It isn’t really all at once. Looking back, there were little signs along the way. You just didn’t think much of them at the time.

Then one morning it takes your dog three tries to get up off the kitchen floor. You realize your cat hasn’t been spending much time on top of the cat tree lately. Or halfway through a trail ride, you notice your horse is taking longer than usual to loosen up.

Suddenly, those little changes don’t seem so little anymore.

More often than you might think, changes like these can be related to osteoarthritis. It becomes more common as animals age, but stiffness, pain and reduced mobility shouldn’t automatically be written off as an unavoidable part of getting older.

What Is Osteoarthritis?

Osteoarthritis is a painful, progressive disease that develops as the cartilage and other structures within a joint break down and change over time. It can affect dogs, cats and horses, and while it becomes more common with age, it isn’t simply a normal part of getting older.

The changes inside the joint can cause pain, stiffness, inflammation and reduced mobility. But that doesn’t always look the way we expect pain to look. An animal with osteoarthritis may not cry out, refuse to move or even have an obvious limp. Instead, they often adjust how they move and what they’re willing to do.

That’s one reason osteoarthritis can go unnoticed for so long. By the time we recognize that something has changed, our animals may have been quietly working around their discomfort for quite a while.

Why Osteoarthritis Pain Is So Easy to Miss

Animals are remarkably good at working around pain. With osteoarthritis, there may not be an obvious limp or one sore leg that gives the problem away. Arthritis can affect joints on both sides of the body at the same time, so an animal may still move fairly evenly. They just start doing a little less.

The changes also tend to happen slowly. A dog who takes the stairs a little more carefully each month never has one day that looks dramatically different from the day before. A cat gradually chooses lower places to sleep. A horse takes a little longer to loosen up at the beginning of a ride.

We adjust right along with them. We open the door instead of waiting for the dog to use the steps. We don’t think much about the cat choosing the couch instead of the top of the cat tree. We give the horse a longer warm-up.

None of those changes proves an animal has osteoarthritis. But when an animal seems to be “slowing down,” it’s worth considering whether they’re simply choosing to do less, or whether something hurts and they’ve quietly adjusted around it.

Osteoarthritis Can Look Different in Dogs, Cats and Horses

The changes you notice depend partly on the animal in front of you. A dog, cat and horse can all have osteoarthritis without showing it in quite the same way.

Dogs

With dogs, stiffness after rest can be one of the easier changes to spot. Your dog may take longer to get up after a nap but move more comfortably after walking around for a few minutes. Stairs become slower. Walks get shorter. A dog who once jumped into the car without thinking about it may stand there waiting for help.

Other changes can be easier to overlook: sitting differently, losing muscle over the back legs, becoming less interested in play, or hesitating before movements that used to be automatic.

Cats

Cats can be much harder to read. Limping isn’t necessarily what you’ll see, even when osteoarthritis is causing pain. In a prospective study of 28 cats with osteoarthritis, changes in jumping were among the most common signs. Seventy-one percent had changes in their ability to jump, while overt lameness was not the most common clinical feature.

Instead, you may notice that your cat no longer jumps to a favorite high spot, chooses easier-to-reach sleeping places, grooms differently, or has trouble getting comfortably in and out of the litter box.

Horses

In horses, lameness is more commonly part of the picture, but early changes can still be intermittent or easy to dismiss. A horse may come out stiff and gradually move more comfortably after warming up. You might notice reduced range of motion, a change in the way the horse moves, or heat or swelling around an affected joint.

Osteoarthritis is the most common joint problem in horses, but it can affect horses of any age. Previous injury, repetitive stress and other factors can all play a role.

Across all three species, the important clue isn’t one particular symptom. It’s a change from what’s normal for that animal.

How Is Osteoarthritis Diagnosed?

You can’t tell for certain from behavior alone. Injuries and other health problems can cause many of the same changes, which is why a persistent change in movement, activity or behavior is worth bringing to your veterinarian rather than assuming it’s arthritis.

Your observations at home can be surprisingly useful. You know what your animal normally does, and some problems are easier to see in an everyday setting than during a veterinary appointment.

Cats are a particularly good example. Some freeze or resist handling during an examination, making it difficult for a veterinarian to judge movement and joint pain in the clinic. What you’ve noticed at home can provide an important part of the picture.

If a change comes and goes, a short video can help. Record your dog getting up after a nap or using the stairs, your cat making a jump they’ve begun to struggle with, or your horse moving when the stiffness is most noticeable, as long as you can do so safely.

Depending on the animal and what your veterinarian finds, diagnosis may involve watching how they move, examining the joints and looking for pain or reduced range of motion, along with X-rays or other imaging when appropriate. Imaging isn’t the whole story, either. In cats especially, painful joints and changes visible on X-rays don’t always match neatly.

Osteoarthritis Pain Can Be Managed

Osteoarthritis is progressive, and the changes already present in a joint can’t simply be reversed. But that doesn’t mean an animal has to live with unmanaged pain.

What helps depends on the species, the joints involved, the severity of the disease and the individual animal. Veterinary care may include pain medication or anti-inflammatory treatment, appropriate activity, weight management when needed, rehabilitation, changes around the home or barn, and other therapies.

The options aren’t interchangeable between species. A medication that’s routinely used for a dog may not be appropriate for a cat, and managing an arthritic horse is its own conversation. That’s another reason a good plan starts with knowing what is actually causing the change rather than treating “old age” on your own.

Don’t Assume They’re Just Getting Old

Getting older certainly changes what our animals can and want to do. But age alone doesn’t explain every slower step, abandoned jump or stiff start.

Sometimes the first clue that something hurts isn’t dramatic at all. It’s simply realizing that an animal has quietly stopped doing something they used to do.

That’s worth noticing.

And if osteoarthritis is behind the change, recognizing it gives you and your veterinarian the chance to help with the part that matters most: keeping them comfortable enough to continue enjoying the things they still want to do.