When trying to analyze an animal’s body language, each signal must be taken in context. Other body language signals should be analyzed as well to form as complete as possible view of the animal’s intent or emotional state. You can generally characterize signs in 3 categories: go, stop and yield.
Body blocking is a body language cue which is intended to stop the motion of another animal. This is often very subtle and may just look like the cat is resting. It is a STOP signal.