This is a puzzling, and progressively debilitating condition found in older felines. The disorder resembles dementia in humans. Behavioral signs tend to be more clear and noticeable when they reach the age of 10 and older. They include wandering away from home to unfamiliar territory, lack of interest in playing, excessive sleeping and altered cycles of sleeping, indifference to food and water, urinating and defecating outside the litter box, staring blankly into space and unprompted episodes of loud vocalizing. Routing health visits to your veterinarian can help to catch these signs early and care can be given to improve the quality of life for your pet..