Q: Our older cat is displaying signs of aggression towards our new kitten. How can I get them to have a harmonious relationship?

Original Question: "We have a new kitten and our cat is showing signs of aggression; she’s hissing, stalking and also swiping at the kitten. We are willing to try a calming collar or any other advice you could give us." - Rick

Vet Certified Answer | Answered: July 31, 2017

Hi Rick,

Here are some strategies that may help resolve the problem.

1.Reintroduce them slowly. I would keep them separated for the time being and get set up for the reintroduction. You'll want to set up two different rooms of the house that the cats could be in. Keep them in their private room for a few days providing litter and food. Then you switch the cat’s positions for a few days. This way they get a chance to walk around and smell the other cat’s scent. By smelling each other first, we will have a gentle introduction. After a few days of living in each other’s area, you then introduce them by sight but still keep them apart so that they can only see each other visually. After a few days of this, you can then allow them to physically engage each other.

2. Use supplements to control their aggression. It's also important to use the supplements when they are segregated from each other. There are devices you can buy that aerosolize a feline hormone in the air that has a calming effect. This can also be used when they are separated in different areas so that it starts working and keeps them happy when they are confined. There are natural products you can get from a pet supply store that will help as well. You can continue to use these products after they are introduced to keep them calm for a few weeks to months. They will learn to live peacefully together and then you can wean them off this supplementation.

3. Use medication if there is no success. You can speak to your veterinarian about prescription medication that will definitely have a strong calming affect on each cat. It's ideal to not have to go to this level because it will be more costly and less healthy. Don't be afraid to use this as an option if initial efforts are failing because its more important that you create a harmony so that they have a happy life and are not being moved to another home without a caring owner like yourself.

Hopefully this helps. Good luck and thanks for your question.

Dr. Clayton Greenway 

Disclaimer: and its team of veterinarians does not endorse any products or services mentioned. Advice presented by our veterinarians is not meant to replace a regular physical exam and consultation with your primary veterinarian. We always encourage you to seek medical advice from your regular veterinarian.

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