get old cat aquainted with new kitten?

Same sex cats are more difficult to raise together - I suggest adopting an older female kitten (8-9 months) as this will give your girlfriend's kitten a companion and, when they get to know each other (two weeks max.) they'll pester your older cat as a team, or will ignore him which he will prefer for months, or years. If you break up with your girlfriend, let her take the female with her.

Just read your additional details. You should allow both cats to roam through the house when you're there to supervise. Remember that the kitten is, most likely, a lot faster than the older boy but, as older boys are craftier, if you hear nothing for a few minutes when they're out of your sight, go to investigate but do keep them separated when you're not there.

A few years ago, I had a male same age as yours, a 3-year old female who adored him and then I introduced a 3-month female into the mix. She would play with the older cat's tail and bite his feet, etc. until he spit at her. Well - one day, I "heard silence" and went to check - the older guy had the kitten pinned against the couch and was sitting on her while he was grooming! She was flailing the air and I had to move him off her (since there was a 12-pound difference in weight) - she stopped pestering him for 2 weeks but never pestered the older female.

Litter mates often become territorial, competitive and jealous as they become older and, again, the same-sex cats may fight or ignore each other.

I Have Done This Many Times Myself..It Takes A Few Days But You Have To Separate The Cats Give Your Older Cat The Run Of The House As He Has Always Had, Put The New Kitten In A Separate Room Behind A Closed Door..Let Them Smell Each Other Through And Under The Door For A Few Days And Then Slowly Introduce The 2 Of Them...Make Sure That Theres Food And Water And A Litter Box In The Room With The New Kitten And Also Go Into The Room Or Bring Her Out With You To Show It Lots Of Love... Make Sure Your Petting Your Older Cat And Showing Allot Of Attention To It Also..After 2 or 3 days They Seem To Realize That The Other One Is Going To Stay....There Will Be Some Growling Hissing And Swatting For Awhile But After A Little Bit Of Time This Will All Correct It Self And You Will See A New Friendship Blossom...But As For Now Try The Separate Rooms...Hope This Helps

I recently moved into my brother's house where 2 cats already lived. They are indoor/outdoor cats. My cat is an indoor cat only who has been completely declawed. The first thing you can do is to rub the new cat with a hand towel to get the scent on it. Then place it under the old cat's food dish. This will get them accustomed to the smell.

You cannot keep them separated forever. They will eventually get used to one another. If your cat realizes that all he has to do to keep the new kitten out of his territory is to react to it and you will put it in the bedroom, he will continue to do that. It has been 2 months in our household and there is 90% peace here. There is just an growl once in a while.

You will just have to let them work out their differences on their own. Try letting the kitten roam for a few hours a day and then increase as time moves on.

Whoever is new to the environment, you should separate that cat in another room so that they can get used to each other's smell ... but while protected by a door!

Then you can bring out the cat and let them sniff each other for awhile, and see how they react. Then depending on how they act, either separate or just supervise. Have you ever tried them playing together? Like with a string or something? Will they sit down together if you have treats? If they are getting rewards while being together, then they might associate the treats with being near each other.

The first stage would be to get each other acquainted with their smells and associate good memories with those smells. It would be good to feed them on opposite sides of a door, for instance, or brush them with the same brush.

Whenever they are together, never snap at one or tell one "no." Instead, love both of them even more than usual. Eventually, their train of thought would lead to "you know, maybe this isn't so bad after all, there's a lot of loving when this chump is around."

Good luck! =^..^=

:3

They usually take about 2 weeks to get to know each other, through scents.

How long have they been together?