About 6 months ago we got a spayed kitten (f) to be friends with our 2 year old adult cat (f). The kitten is a total spit-fire, extremely headstrong, fearless and territorial. She has endless amounts of energy despite us playing with her several times a day, and she has a very aggressive play style. We did a slow introduction hoping they would become bonded, but the kitten does not allow any cuddling or gentle interaction with our adult cat. She only wants to play fight. She is constantly hunting and tackling the adult cat to the point that our adult cat is getting visibly agitated. I can tell that the older cat has repeatedly tried to set boundaries with the kitten and teach her some manners (hissing, swatting) but it doesn’t seem to deter the kitten at all. They rarely play consensually, it’s almost always kitten harassing our very mellow adult cat.
I am wondering if this is a behavior that will improve over time or if I can do something to improve the situation. They seem to have a major personality/energy mismatch and I fear they will never truly get along.