Why does my older cat keep hissing at the new younger one?

Ever since we brought a new kitten into our home a few days ago, our older cat has been hissing quite a bit. I'm worried because he usually isn't aggressive, and I'm not sure if he's just being territorial or if there's something more serious going on. Is this behavior normal, and how can I help them get along?

Answer

It’s common for cats to be territorial, and introducing a new kitten may trigger some initial stress and aggression. This behavior is typical as your older cat adjusts to the newcomer.

  • Your older cat is likely expressing territorial instincts.
  • Initial hissing is normal in multi-cat households during introductions.
  • Patience and gradual introductions can help ease tensions.

Cats are territorial animals, and a new addition can disrupt the established hierarchy in your home. Hissing is your older cat's way of communicating discomfort. To facilitate a smoother transition, try keeping them separated at first and slowly introducing them by allowing scent exchange with toys or bedding. Over time, they should become more accustomed to each other’s presence and begin to coexist peacefully.

Book a consultation with a licensed vet at Dial A Vet for just $49 AUD if you're unsure or symptoms are getting worse.

Frequently Asked Questions

  • How long will it take for my cats to get along?

    Every cat is different, but introducing a new kitten can take anywhere from a few days to several weeks. Patience and gradual introductions will help ease the process.

  • What can I do to help my cats adjust?

    Allow them to get used to each other's scents first by swapping bedding or toys. Ensure there's plenty of space and resources like food bowls and litter boxes to avoid competition.

  • When should I be concerned about my cat’s behavior?

    If the hissing escalates to aggressive fights or causes injury, it's best to consult with a vet. Persistent stress signs, such as not eating or over-grooming, also warrant professional advice.

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