Loud noises and sudden sounds
Cats possess extremely sensitive hearing, capable of picking up frequencies we can't even imagine. While this acuity makes them formidable hunters in the wild, it turns everyday noises into actual assaults. A vacuum cleaner, for example, resonates for them like a crushing roar.
When they hear a person yell, they immediately perceive it as a frightening, approaching threat. A study also highlighted that cats exposed to noisy environments develop clear signs of stress, leading them to hide more or become aggressive.
Maintain a calm sound environment. Your gentle voice is their best reference.