Yes, there are unstable cats. I know people deny this but I have always found female cats much more unfriendly than males. I’ve put up with a rude female cat for 18 years now although she doesn’t stalk ME - she stalks the dog. And she loves to bite although rarely scratches. Odd, because she was a lovely kitten.
I take it very seriously that I am strongly considering having her PTS in the morning. I am very upset about making this decision and hope my vet understands.
My son brought home two cats and the ‘mama” thought she was the boss of everyone. She bit me!
So I spent an hour on the floor stalking her butt and swiping at her without cause - just cause I felt like it. I stared her down. She hid under a bed and I went in after her and knocked her out from under the bed.
Then I got up and walked away. We never had a problem after that. : )