A very ANGRY CAT..

I came across a video in youtube about an angry cat, that outcry like no else could ever heard of. It was really loud you may even thought it was like a real human who is crying. I know cat has a special way to show how angry or maybe intimidated or feel threatened about something or someone and that's why they do make noise and try to manifest a fierce look to a suspected enemy. Anywies, cat is still cute no matter what! I'm planning to take care of one or two or more cats in the near future! What can you suggest?