What causes cat stress response?

Cat stress reactions are generally caused by external stimulation or changes in the environment, such as changing food, changing the environment, coming to a stranger, or being frightened by noises, etc. It is a psychological or physiological reaction. , generally there will be rapid heartbeat, shortness of breath, not eating or drinking, myocardial ischemia, etc. In severe cases, it can also cause liver function damage.
Tips:
When a cat has a stress reaction, it is best to let the cat relieve itself and not to stimulate the cat again.