What is arthritis in cats?
Arthritis is a general term for abnormal changes in the joint. These changes occur when cartilage is worn away faster than it can be replaced. Cartilage acts as a cushion to protect the bones. When it wears away, joints become swollen and painful.
Middle aged to senior cats can develop arthritis. Also known as degenerative joint disease, it can be a source of chronic pain and negatively affect your cat’s quality of life. Arthritis in cats occurs when a joint is unstable causing the bones to move abnormally within the joint. Over time this abnormal movement erodes the cartilage that lines the joints and bone begins rubbing against bone creating chronic inflammation and pain.
Although arthritis is not curable, early treatment is key — without it, your cat will continue to lose cartilage resulting in the need for more aggressive treatments like surgery.1

Does my cat have arthritis? Warning Signs and Symptoms
Arthritis can have serious effects on a cat’s health and mobility. If your cat has arthritis, the first thing you’ll notice is that she finds movement difficult and is reluctant to walk, run and jump. Some signs of arthritis in cats are similar to those of other serious conditions. Make sure you consult your veterinarian if you notice any of these signs.
Signs of arthritis in cats
- Decreased activity
- Trouble jumping on/off surfaces
- Eliminating outside the litter box
- Walks stiffly and may even limp
- Social reclusiveness
While most cat parents are tuned in to the little details and quirks of their cat’s personality — like their ability to open a door or proclivity for attacking feet at night — it can be difficult to determine when behaviors that seem unusual are signs of a deeper health concern. Here’s a look at some of the ways cats hide their pain, common conditions they suffer from, and how to get your cat the care she needs.