Will my cats ever get along?? URGeNt?

I had the same exact problem about 8 months ago. I had/have a 3 year old cat and I wanted a new kitten. I knew since the first thought of a new kitten that my cat wouldn't be happy about it. She is MY baby and she knows it. She's spoiled and hates other cats. (I brought other kittens and cats around her just to she how she acted and she would hiss and growl and run away.) My neighbor's cat had a litter of kittens and i Ended up falling in love with one of the kittens. I brought the kitten home with me once it was old enough to leave his mommy which was 6 weeks old, as old as your kitten. I put the cat and the kitten in the same room and my cat just stared the kitten. Her tail got REALLY fat (cause that's what happens when she is scared) and she just hissed and growled and ran away. She did this for about 3 months. Wanted absolutely nothing to do with the kitten. If it even came near her, she would run away. And she always stayed in my bedroom. She never left. As months went by, she didn't get AS angry when the kitten came by, but she DEFINITELY still hated him. About 5-6 months went by and it still made my cat VERY uncomfortable. The 'closest' they got was once time my cat was sleeping on my bed and the kitten came over and laid next to her (but still about 3 feet away) and my cat kinda looked at him for a long time as the kitten slept, but then eventually my cat went to sleep! So it made me feel great they she went to sleep with the kitten on the same bed. Because that meant she made some type of progress and she felt a little more comfortable with him. Unfortunately, shortly after that, my kitten ran away and I never seen him again. I think someone took him.

But I believe that if you just give your cat time to adjust to the new kitten, she will, eventually. It won't be easy and it won't be quick. But I think within time, it will happen. Just DON'T force it. Try to make her comfortable with the kitten. Play with the kitten in front of her to make her feel safe. But then in the same breath don't make her jealous. Just let it kinda ride out, I think they will get used to each other in time. Wish you the best of luck, hunny!

In order for your cats to have a foundation for getting along, you should properly introduce them. In order to do that, it is best to isolate the new kitten. Your six month old kitten should have access to the same space she is used to having (whether that's the run of your place, or a couple of rooms), but you should set up the six week old kitten with everything she needs (bed, litter box, food, water, toys) in a small room (a bathroom is usually a good option for a kitten that young) that the six month old kitten cannot immediately access. Start by having the six month old kitten eat her food directly outside the door of that room. This will help the six month old kitten associate the smell of the new kitty with something she likes (food). Then, after you have done that for a few days, start letting the younger kitten out to explore a for a few minutes and put the older kitten in the room the younger kitten was in (this allows her to check out the younger kitten's scent without having to actually interact with the younger kitten). At the same time, also try to mingle their scents. Take a blanket or something that smells like the younger kitten and rub it on the older kitten (again, without the younger kitten present) and vice versa. Once you have done all of this over the course of 7-10 days, you could try allowing limited interaction. First, hold the younger kitten and sit in the same room as the older kitten. Don't put the younger kitten on the ground, but let the older kitten see her. Once she can handle that calmly without any major amounts of hissing, start letting them interact while you are supervising them. Make sure you continue to separate them when you are not present until the older kitten seems to tolerate the presence of the younger kitten (no major hissing, no swatting, etc). This process can take two weeks or longer with adult cats, with kittens it can often go a little more quickly. The long introduction is time consuming, but it sets up the foundation for a life-long relationship between your cats, so it is well worth it in the end.