At Cat's Club Benidorm we've watched lovely adoptions wobble for the same reason over and over: rushing day one. The new cat arrives, someone lets it loose in the living room with the best of intentions, the resident cat hisses, the dog gets too close, and suddenly there's tension in a home that was meant to be a fresh start. Most of the time it's avoidable. Introducing a new cat properly is slow, no getting around that, but it's what decides whether your two animals end up curled up together or never quite settle. We know it's tempting to skip ahead when all you want is to see them snuggled on the sofa already. Even so, a few days of patience now beats weeks of damage control later. Here's how we do it, and what we tell the families who adopt with us here on the Costa Blanca.
Start with a safe room of their own
Before you even think about introductions, the new cat needs its own space. A quiet room (a spare bedroom, a study, whatever you have) with food, water, a litter tray and somewhere to hide. In the flats round here, where the terrace is often the only extra room, this can mean a bit of reshuffling, but it isn't optional. The cat has landed somewhere unfamiliar, full of the smell of animals it doesn't know, and giving it four walls it can control takes a huge amount of stress off the table.
Keep it there for the first few days and don't force anything. Let the cat decide when to come out from hiding. Your other animals will know someone's behind that door, and that's part of the plan: they get used to the idea before they ever come face to face.
Scent swapping: the step most people skip
For a cat, smell is everything. Before they see each other, you want them already acquainted by scent. Rub a soft cloth on the new cat's cheeks and leave it where your residents sleep, and the other way round. Swap blankets. Switch the animals between rooms for a while so each can investigate the other's trail with no pressure.
Here's another simple trick: feed both of them either side of the closed door, starting far back and gradually moving the bowls closer. That way they learn to link the other's smell with something good, their dinner, rather than a threat. This stage can run for several days, and there's no rush at all.
See first, touch later
Once they seem relaxed through the door, move to controlled visual contact. A baby gate, a screen, or simply the door propped open a crack so they can see but not reach each other. Reward calm behaviour. If it's going well, extend the sessions little by little.
Free physical contact is the last step, and only when the visual meetings have become boring because they're so uneventful. Always supervise the first few times, leave escape routes and high perches the cat can jump to, and don't leave them alone together until you genuinely trust that they're fine.
If there's a dog in the house
With a dog the script is similar, but safety carries more weight. During introductions the dog stays on a lead and you stay in charge. The cat always needs an escape route and a high spot out of the dog's reach. Reward the dog for staying calm and ignoring the cat, and stop any chasing straight away, even if it looks like play.
Make sure the litter tray sits somewhere the dog can't get to, because a cat that can't use the loo in peace stresses fast. With dogs that have a strong prey drive, go even slower, and if you're unsure, ask for help.
Signs to slow down
- Constant hissing, growling, or a cat that freezes and goes rigid
- Ears flattened back, pupils wide, tail puffed up
- The new cat stops eating or stops using the litter tray
- A resident hiding away or no longer going about its normal day
- Any serious attempt to attack or chase
If you see this, no harm done: drop back to the previous stage and try again more gently. Going backwards isn't failing, it's moving at their pace.
Pheromones and patience
Feline pheromone diffusers can help create a calmer atmosphere through those first weeks. They're not magic, but they help, especially in small flats where there isn't much room to keep the animals apart. What really works is time: some pairings click in days, others need weeks. Neither is a problem as long as you keep edging forward.
One reminder we give with every adoption: our cats live indoors and we always ask for protection on windows and balconies. A new, nervous cat exploring a home it doesn't know yet is exactly the one most at risk of going over the edge of a fourth or fifth-floor terrace. It's not a myth that cats always land on their feet. They fall, they get badly hurt, and sometimes they don't survive it.
Frequently asked questions
How long does it take to introduce a new cat properly?+
It depends on the animals. Some accept each other within days, others need two or three weeks, sometimes longer. The key is not skipping stages: safe room, scent swapping, visual contact, then physical contact, stepping back whenever you need to.
Can I just introduce two cats straight away to get it over with?+
We wouldn't advise it. A sudden first-day meeting can cause a fright or a fight that then takes weeks to repair. Going slowly from the start is actually the fastest route to a happy household.
My dog is really gentle, do I still need to be this careful with the cat?+
Yes. Even if your dog is a sweetheart, the cat doesn't know that yet. Use a lead for the first introductions, give the cat escape routes and high spots, and never leave them alone together until things are settled.
Do pheromone diffusers actually work?+
They can help take the edge off during the first few weeks, especially in smaller flats. They don't replace a proper introduction, but they're a useful bit of extra support.
Take this slowly and you're giving your new cat the best possible chance of staying forever, which is exactly what matters most to us. Thinking of adding to the family? Have a look at the cats looking for a home and get in touch. And if you can't adopt right now but want to help, becoming a foster home is what we need most of all: without foster homes, there are no rescues.
