A normal cat has an average of 20 to 30 breaths per minute. When your cat shows an increase in heart rate, pulse, and any respiratory issues then you should call your veterinarian right away. This situation is very alarming and considered an emergency.
10 Physical Changes
Stressed cat has wider eyes, dilated pupils, and pins their ear back flat on their head. It is a hormonal or flight response in stressful situations. You need to adjust to their emotions and look closely at their physical reaction to help them with their stress.