Aggression Between Cats in the Same Home

Chapter 1: Why Your Cats Fight: What's Really Going On

You’re watching them right now, aren’t you? Maybe one is crouched low under the coffee table, ears flat, tail thrashing slowly. The other is sitting on the back of the sofa, staring with unblinking eyes, a low growl vibrating in her chest. Or maybe they’re not even in the same room. Maybe one is camped out in the hallway, blocking the route to the litter box, and the other has taken to peeing on the rug because she’s too terrified to walk past. You’ve tried the online forums. You’ve tried the advice from your neighbor who “had cats for years.” You’ve tried just letting them sort it out, hoping they’d eventually become friends. And here you are, months later, with two cats who can’t share a hallway without a hissing match.

Let’s start with a deep breath, because I need you to hear something important before we get into the weeds: This is not your fault, and this is not because your cats are “bad.” They are not being spiteful, they are not holding grudges, and they are not trying to make your life miserable. They are being cats. And cats, as much as we love them, are not naturally wired to share their territory with strangers. Every fight, every hiss, every tense standoff you’ve witnessed is a symptom of a deeper problem. Our job in this book is to fix that deeper problem, not just patch up the surface