2 kittens and a dog. How do I introduce the new kitten?

[Kelsey]

I just got a new female kitten for my 12 week old male. I think she's nine weeks. I have a bulldog pup also. She hisses and spits whenever the male gets near. He rolls over and submits to her but she growls and hisses. Our puppy looks at her through his kennel. And when she's on the bed he looks at her because he can only get his front paws up there. She hisses at him too. If they get too close she flips out. What am I supposed to be going?

 

[AsianLover]

well i think your cat it just freaked out because of the new surroundings.. when i got my new kitten she would hiss at me and my older male dog. but at night i would take my dog into my room and shut the door. and let the kitten out to get used to the house. but make sure she cant get stuck somewhere.. after about a week i let them really interact with each other. but be careful you must watch them because there could be a fight.

what im trying to say is your kitten just needs to know where to hide if the dog comes around. she doesn't want to be trapped and that's how she feels now so she thinks she has to be feisty.