One of the things that I could not get used to was the cat climbing high and flying onto me. I would walk in the kitchen and without warning the cat would launch from somewhere, and land on me.
It was really freaky! I never got used to that! Some days I could not find her anywhere and as I had already "lost" one cat, I was a bit concerned in case I would "lose" another. She would hide in the most amazing places, and on some occasions would climb high onto the highest cupboard. The cat would climb down onto the microwave oven which was on top of the refrigerator, and leap on me as I entered the room. And she'd hang on with her claws.
My grandchildren thought that she had "evil eyes" - she seemed to have a look that was quite evil, especially when she was not happy with me.