Current feline life stage guidelines describe a cat as mature from roughly seven to ten years, senior from ten onward, and often reserve the term geriatric for cats past fifteen. Against a typical Dragon Li lifespan of twelve to fifteen years, this means the senior period is not a brief coda but a fifth or more of the whole life. The transition is gradual and, in this breed, easy to miss.
The Dragon Li's stoicism is the central clinical fact of its old age. A landrace cat descended from generations of working animals does not advertise weakness, and this breed is notably self-contained even by feline standards. It will not limp conspicuously, cry, or seek sympathy. It will simply stop jumping onto the counter, and the household will conclude that it has mellowed. Mellowing is not a diagnosis. Reduced activity in an older cat is arthritis until proven otherwise.
The changes that do appear are quiet. Sleeping more, and in warmer places. Playing in shorter bursts. Grooming less thoroughly, so that the coat over the lumbar spine and the base of the tail loses its polish and begins to clump, which is often the first visible sign of spinal pain because those are the areas a cat must flex to reach. A slight loss of muscle over the hindquarters and along the spine, so the vertebrae become easier to feel. A greying of the muzzle, which in a brown mackerel tabby is subtle.
Owners are the best diagnostic instrument available, because they see the cat every day and the veterinarian sees it for ten minutes a year. Keep notes. What was this cat doing eighteen months ago that it does not do now? Which surfaces has it stopped using? Has it started taking the sofa as a step to the windowsill that it used to reach in a single jump? Those observations, written down, are worth more than any single blood panel.