Assessing the body language of a cat is an important way to understand the emotions being felt. Cats can sometimes feel a little stressed and perhaps even depressed. Their posture and general mood will turn down and the tail may begin to droop and twitch in anticipation of dangers.
Cats who lose confidence in their surroundings may begin to exhibit unusual behaviours and will even resort to hiding in confined spaces where they cannot be seen. Some cats who feel a little threatened may even resort to spraying and marking their territory, something that many owners find undesirable. The body language of a cat suffering from stress will also be observed as timid and the tail may shake in the air as they spray.