Introducing kittens?

[Hubblez]

Hello, I think I just need a bit of reassurance! I'm scared my kittens are never going to get along

I have a 3 and a half month old boy kitten who I've had since 7 weeks old (kind of 'rescued' it) and 2 large yearish old dogs, after slowly introducing them they're all fine together and have free run of the house, tho kitten plays with the dogs they can't really play back or will squash him and so after reading up that people often recommend getting two cats together I decided to get a second kitten

Girl kitten is 4 months old but is massive, was from a rescue and used to live with an 8 month old boy cat. Since both the kittens are so young I assumed they'd get on fine. Wrong!

Girl kitten growls and hisses at boy kitten, initially was hiding in a corner and tense but now has got used to me and kind of to boy kitten. Now she still growls and hisses if he goes near and might bat him with her paw if he's too close but she's much more relaxed and will groom herself and roll around if he's in the room, it's only when he's close the growling starts again. Boy kitten couldn't give a toss and hasn't got a care in the world, and will keep trying to go up to her to sniff until he's batted away then repeats 5 mins later

Will girl kitten ever stop hissing and accept him? Today they were playing on different levels of the cat scratching tower thingy and started swatting at each other and girl kitten had her ears back but I think boy kitten thought it was a game. This lead to them rolling on the floor fighting and both hissing so I made a loud noise and they stopped and I took boy kitten away. It seemed to be getting better but now they had a more official fight I'm worried their relationship will be ruined

Girl kitten also despises the dogs and scratched one who went to sniff her but he's a wimp and ran away, do you think she just needs more time to settle in? She's lovely when no other animals are around and it's just her and me, since she lived with a boy cat before though and is young I can't see how or why she seems to hate boy kitten.

Please tell me your cats hated each other and now are best friends?

[Freckletoes]

How long have they been together? We introduced a second kitten and they fought like crazy for a good few weeks. Now they get on fine! One of our older cats still hates both kittens though and gets grouchy with everything and everyone if they are around!

[Fluffycloudland77]

Male un-neutered kittens can be incredibly annoying though. Imagine a toddler dosed up to the eyeballs on haribo and cola wanting constant play.

It might get better when he's neutered at 5-6 months because they calm down after that.