Hi. So I adopted a kitten who was abandoned by someone (found in a box near a dump). It's been one day. I already have cats at home. A female and male, and three kittens (same age almost as the new kitten). But trouble seems to be that the new kitten is hissing at all of them. The female cat has tried to initiate licking but the kitten is not accepting the gesture. And on top of that, the new kitten is bullying the other kittens. The new kitten is literally hitting them whenever they are trying to play with him. My cats and kittens have tried to adjust to the new one but why is it that the new kitten (male) is not interested?