This might be a scared cat’s attempt of removing any waste from her body since it won’t help her in the coming situation. There are also some opinions that removing waste could give cats a speed advantage or a slight weight.
1.Give your cat some space, and move slowly and carefully. 2. Show her a safe exit – like an open door or her favorite cat tree. 3. Don’t push the issue and try to show your cat that there’s nothing to be afraid of.