Your veterinarian may discover changes in your cat's health that you have overlooked. It is always better to err on the side of caution. Spraying is the deposition of small amounts of urine on vertical surfaces. The spraying cat may be seen to back into the area, the tail may quiver, and with little or no crouching the urine is released. Some cats will also mark their territory by leaving small amounts of urine or occasionally stool on horizontal surfaces.
Cats mark the locations where they live or which they frequent in many ways.
Cats will mark with scent glands on their feet, cheeks, face and tail as well as with urine. Deposition of an odor communicates that the animal was in a location long after that animal has gone. Marking can occur due to other cats in the vicinity either outdoors, or among cats that live in the same household. Cats will also mark their territory when they feel threatened or stressed. This can occur with a change in household routine, compositions, living arrangements, new living locations and other environmental and social changes.