We found 3 month old male feline outside our house and we took him to the vet and got him all healthy but he is not old enough to neuture yet. Well today we let him out after a month of being by himself with occasionally letting him out to run around with the other cats locked up and he just flat out attacked our other 2 cats. He got a hold of one and there was blood and fur every where. The other cats did not start any of this and he just won’t quit. Any body run in to this issue? Any suggestions other then rehoming him?

Behavior issues can be very easy to fix or extremely complex. I'm afraid your best bet is to talk to a behaviorist. I took a look, and NC State has a board certified behavior specialist who might be able to give you solid advice. No idea on cost, but it's worth a call.

Also, you might call your vet and see if they know the behaviorist (a Dr. Barbara Sherman). Sometimes your vet can call and bend their ear for little or no cost to you, depending on how good your relationship is with your hometown vet. Best of luck.

Try to reintroduce the new cat to the others. We do it slowly.
Let them sniff each other through a solid door.
Eventually the new cat comes out in a hard plastic kennel to the living area with the humans. Small periods of time every day. The other cats will sniff, look, and probably hiss. Eventually the novelty of the new cat will wear off. The new cat will see you interact with the resident kitties. Soon you can bring the new cat out on a leash (yes a leash). Let him walk around exploring with you. The other cats will watch and trust you to make sure they are safe. Once that is done try to get some play time with your resident cats and include the new kitty still on a leash.
There will still be some evil eye looking regarding who is going to be the top cat, but this method may help alleviate some of the stress.

I have one cat who wants to be the top male since we rescued him. He can not be trusted off leash to leave my senior kitties alone. Recently in came a 20 year old rescue who he tried to bully. She took 1 look at him and hissed. He immediately backed down. She is considered his girlfriend because he seems to just say yes dear including moving out of the sunny spot or comfortable beds so she can have them. It is so darn comical how tough he is with everyone else, but his g/f controls him.
Good Luck!

quote:

Originally posted by gambit123:
...Any suggestions other then rehoming him?

We tried keeping new additions in a dog crate in the same room with the other cats for a while, and that worked nearly all the time. Unfortunately, I can tell you from our own experience that when it doesn't work, placing him in another home is the only way to go.

Yep... there are just some cats that wont tolerate other cats. That said, once he is snipped, this behavior may cease.

Paragon had a cat that was terrorizing its mother and siblings, so she palmed the evil thing off on me. It is the only four-legged creature here, so there is no conflict. It tolerates me, it absolutely loves my wife.

quote:

Originally posted by YooperSigs:
Yep... there are just some cats that wont tolerate other cats. That said, once he is snipped, this behavior may cease.

Or he may start shitting on your pillow, just for spite.

3 months should be old enough to neuter.. We have a few fosters at the moment that were neutered yesterday, and the baby is around 3 months.

quote:

Originally posted by V-Tail:
Paragon had a cat that was terrorizing its mother and siblings, so she palmed the evil thing off on me.

There's your solution gambit, give the cat to V-Tail.

quote:

Originally posted by SpinZone:

quote:

Originally posted by V-Tail:
Paragon had a cat that was terrorizing its mother and siblings, so she palmed the evil thing off on me.

There's your solution gambit, give the cat to V-Tail.

Noooooo!

By some odd chance does your kitty look like this?

In addition to the other suggestions in this thread, use cat toys to completely drain his energy before putting him with the other cats. Wear him out to the point he doesn't want to play anymore; he just wants to lay down. The toys that are like a tiny fishing pole with a lure on a string are really good because you can make the cat run and jump with minimal effort on your part. Get a few different lures, so if he gets tired of one, you can switch to another. You may need to have one or more play sessions with him every day, if he doesn't settle down on his own.

Also, check out the show "My Cat from Hell."

quote:

Originally posted by jbcummings:
By some odd chance does your kitty look like this?

...Or this..

we had good luck by keeping separated in a room for a few days, followed by rubbing our older cat with a towel, then rubbing the new cat,
then let the other cats sniff the towel a day before we let the new one loose,

transferred the smells, or whatever,

still some hissy fits, bites and slapping, but it subsided as soon as the pecking order was figured out,

and we stayed in the room/area with them for a bit to make sure no killing was done

Though the image above makes my kitteh look stark raving aggressive, it's more the special effects of the program I used to enhance the image. He's really a sweet little guy. I would say that since he is an only kitteh, he's not particullary fond of other cats. Since my wood fence blew down from the hurricane, at least two other cats are infringing on his territory. When I take him out back with me he'll make a beeline towards the other cats. In the past I befriended a stray cat and started to feed him because he look like he could use it. My cat would hiss and growl at him. It wasn't until I started really petting it and semi-bonding with him did my kitteh finally drop the aggressive act. I think it was a big part of getting the stray cats sent on me from petting him. I think my kitteh trusted my instincts and he never put his guard up again. Too, I think it was my kitten's way acting sorta protective of me in the strays presence, though it wasn't really necessary as the other kitteh was just a bit timid until he started feeling welcome around me. I think scent plays a big part of acceptance.

quote:

Originally posted by newtoSig765:

quote:

Originally posted by gambit123:
...Any suggestions other then rehoming him?

We tried keeping new additions in a dog crate in the same room with the other cats for a while, and that worked nearly all the time. Unfortunately, I can tell you from our own experience that when it doesn't work, placing him in another home is the only way to go.

I have to agree. We've tried taking in stays on multiple occasions. Sometimes it works and sometimes it doesn't. When it doesn't, keep them separated and try to find a new home for the new kitty that doesn't play nice. Vet bills from cat fights can get very expensive plus it's not fair to your other two cats. Living 24/7 with an asshole (some cats, like dogs, are total jerks) that may or may not attack is no way to enjoy life. My $0.02.

quote:

Originally posted by arfmel:

quote:

Originally posted by YooperSigs:
Yep... there are just some cats that wont tolerate other cats. That said, once he is snipped, this behavior may cease.

Or he may start shitting on your pillow, just for spite.

We had one that was aggressive like that, and got even worse after having him fixed. It was hard to blame him though...we did chop his balls off, and apparently they were quite important to his persona.

He got permanently banished to the outside, a dangerous place for a cat to be in Alaska.

The first freeze came, and his whole attitude changed. All of a sudden he loved us, and wanted to be around us. He was even allowed in on occasion after that, and he was so appreciative to be indoors...he respected our space.

He was quite a character in our family for a few years, but he never was granted residence inside the house again.

Just updating to say thanks for all the advice but I am pretty sure this kitten is Satan and the wife pretty much said I would be rehomed before him.

^^^^^^^
Sounds like she's starting on the Cat Lady stage of her life. Ruuuuuuuuuuuunnnnnnnnn!!!!!!!

quote:

Originally posted by jbcummings:
By some odd chance does your kitty look like this?

... that's a beautiful cat!