Stress can be fatal in cats. When a cat is under stress, it may exhibit symptoms such as rapid breathing, rapid heartbeat, stiff and trembling limbs, vomiting, and diarrhea. In severe cases, it can lead to the cat's death.

Furthermore, stress can cause cats to experience elevated blood pressure and potentially lead to blood clots. Therefore, owners must avoid putting their cats in a stressful state and provide them with a quiet living environment.