Introducing New Kitten to Resident Kitten?

I have a kitten that is 10 weeks old female and just got a new one that is a 7 week old female. The older one continually attacks the younger one. They bite, hiss, and growl at each other. I try to break then up, but they just run back and attack each other again. They have done this for two days and it is only getting worse. I would like to know if anyone has an idea how to adjust them to each other?


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Bronze Feedback Medal for All Time! 226 Feedbacks
October 9, 20170 found this helpful
Best Answer

I agree with the recommendations here for slow introductions, having their own space, litter boxes and feeding dishes. That has always worked for me. But, when they begin playing with each other and you see more biting hissing and chasing dont feel like a failure. You will see less of it and it will fade away faster, it will not disappear. Especially with kittens. Kittens engaging in this kind of behavior usually dont hurt each other, it just sounds like war. Just keep an eye on them...they will grow up.

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February 16, 20180 found this helpful

We got a kitten, male, 4 months old. We also have 3 otero cats, a male and two females the older of the two females, the matriarch doesnt like the kitten & didnt like the other female when it was a kitten. We expected her to hiss and growl at the new male kitten, and otherwise ignore him. The other male cat doesnt appear to be hostile to the kitten. But the other female cat, who was up until the introduction of the kitten was vivacious and loving, just freaked out, puffed her tail, hissed a bit, and when the kitten approached her she ran outside through th cat door!


We dont know where she (Luna) is! My wife said Luna came in last night for some food, and Luna hid behind a house plant and actually hissed at my spouse! She has never done that before! Luna is still outside somewhere in the cold rain and if she can hear us, wont respond. Were worried about Luna, generally a loving, playful person- cat. What can we do? The kitten has the run of the house and acts like a healthy kitten should. Can you recommend a course of action to bring Luna back into the fold? Or is it just a matter of time. Were really worried! Help!

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Gold Post Medal for All Time! 677 Posts
October 4, 20170 found this helpful

Reducing Friction Between Kittens

  • Keep them together for a limited amount of time, increasing gradually. They need to get to know each other's scent.
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  • Make sure each has its own territory
  • Make sure each has its own toys and bed
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Bronze Post Medal for All Time! 105 Posts
October 4, 20170 found this helpful

There are several things you can do.

  1. The two kittens need their own space or space in your home. You will need to keep one of them in a room with a closed door.
  2. Feed the cats in two different locations.
  3. Each cat should have thier own litter box.
  4. Now keep the door closed and put the bowl of food for one cat not too close to the door but around the door.
  5. Feed the other cat the same. Do this for 3 to 4 days and watch to see if the cats will eat.
  6. Now start moving the food closer to the door. Let them eat like this for a day or two.
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  8. Find or make a play toy. Attach it to a string and feed it under the door. See if the two kittens will play with this toy together.
  9. Afterwards, block the door and open it just a crack. Let the two cats see each other and smell each other.
  10. Now you will switch the places the cats are living. Move one into the room of the other cat and move the cat into the room of the other one. Let them get to know the smell of each other. Leave them for 20 minutes and move them back to their place.
  11. Do this for a day or two for 20 minutes each time.
  12. Now switch places with the cats and leave them for about 4 hours. See how each one reacts.
  13. Now it is time to slowly introduce them to each other and see how they react.
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Diamond Post Medal for All Time! 1,246 Posts
October 4, 20170 found this helpful

You need to separate them in a way that they can't get in contact with each other (at all) then slowly introduce them to each other little by little.

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