Hi I adopted an (uneutered make stray) 8 week old kitten just over 2 weeks ago and i have a 2-3 year old male neutered former street cat . I kept the kitten in his own room for the full 2 weeks and tried feeding them at either side of the door. My 2-3 year old resident cat refused to even walk near the door or eat even 10 feet near the door. My resident cat used to be a community cat and lived with cats before, but it seemed like he was scared as he didn't know what was lurking behind the door. I did some site and scent swapping for a few days. My resident cat was really unhappy about being in the kittens room and would just scratch at the door to get out. I got a bit impatient and decided to let them see each other through a baby gate. It went much better than I expected and my resident cat just sniffed the kitten and walked away. The kitten puffed up and acted scared but I guess this is a normal reaction. I repeated this a couple of times over about 2 days and my resident cat ate his food about 4 feet from the door with no issues with being able to see the kitten. So I decided to move the gate and allow them to physically meet. There were a few hisses from my resident cat and my kitten just puffs up every time he sees the other cat. A part from that there wasn't any aggression until yesterday. Up until yesterday my resident cat would just watch the kitten from a distance, groom himself and even sleep while the kitten was in the same room. If the kitten got too close then he would hiss. But he's recently started suddenly chasing the kitten, growling, hissing and swatting without any claws. He doesn't appear aggressive before doing this, but now the kitten has started to provoke my resident cat by walking up to him and trying to swat him on the head which results in my resident cat chasing and swatting him. I know it's my fault because I rushed the introductions. But do you experienced cat owners think I should continue and hope that in time they will get along or should I go back to the start and restart the introductions again? The whole reason I adopted the kitten was so my resident cat would have a buddy any help or advice is much appreciated