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Why is my kitten suddenly aggressive and hyper in its new home?

Updated On September 23rd, 2025

Good day, I have a question about my kitten. The kitten was originally my neighbors’ but I’d take it home for an hour or so to play with it and it was always really comfortable with me, my family and our house. My aunt wanted to adopt it so I brought it to their house and now there is a change in it’s behavior. Usually it’s super calm and always sleeping but ever since it came here it’s been super hyper and kind of agressive. What is the problem and what can I do to help the little guy?

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on July 5th, 2018

Hopefully you got your neighbors permission before rehoming the kitten! Cats can have a hard time with change, and the sudden move to a completely new household can be very stressful, thus leading to a change in behavior. As with any new kitten, it is also always a good idea to schedule a first wellness check with your vet to get caught up on vaccines, deworming treatment and check for any potential health issues. If kitten checks out healthy, using something such as a Comfort Zone which is a pheromone diffuser designed to help calm cats during change, and adding in plenty of fun toys, easy access to food and water and litter can help. Giving it some time and letting your kitten settle into her new home for a few days is also a good idea to help her relax.

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