CATS WITH ATTITUDE

Fear is the number one cause of feline aggression understanding that and responding appropriately will help the cat. Cats are both predators and prey, and people are often perceived as the predator.
It's important to understand and learn how to read body language and approach the cat on his own terms. Do not attempt to touch or approach them. Cats often calm down after a couple of hours of the incident always be cautious. Aggression is a consequence of an emotional state.
Cats use different body postures to communicate their emotions. When observing your cat, try to get an idea of its usual attitude when alone and in contact with other animals, including people. As cats become more anxious about their surroundings, they will try to avoid contact with threats. They may change very quickly depending on the seriousness of the threat. Cat body language chart.
 ​https://www.prettylitter.com/blog/what-your-cats-body-language-means