Cats may exhibit a variety of stress responses after being frightened. Common symptoms include lethargy, loss of appetite, dilated pupils, bristling fur, hiding, making frightening noises, erect ears, alertness, curled-up limbs, and nervousness.

In severe cases, it can lead to urinary incontinence, jumping around, accidentally injuring the owner, spontaneous cystitis, and even sudden death in the cat. Therefore, owners should patiently and carefully care for their cats after they have been frightened and take timely measures to alleviate the situation.