Does Microchipping Hurt Cats?
Most cats barely react to the needle, and kittens can even be chipped while asleep for neutering. What to expect on the day, plus simple aftercare and the legal deadline.
It’s natural to worry about the needle when you book your cat or kitten in for microchipping. The short answer is that it can cause a tiny bit of discomfort, like any injection, but it takes just a few seconds and most pets barely notice. Once the chip is in place, your cat won’t feel it at all.
What your cat will feel
The needle leaves a small nick that closes quickly, and no fur needs shaving. The needle is quite large compared with the ones used for vaccinations, so a brief pain response at the time isn’t unusual, and any little bleed at the site should stop within a minute or two.
If you’d like the full picture of the appointment itself, our guide to what to expect at the microchipping appointment walks through the visit from start to finish. If you’re asking the same question about a dog, our guide to whether microchipping dogs hurts has the answer.
Chipping a kitten while it's being neutered
If the needle is the bit putting you off, there’s a route where your kitten feels nothing at all. A cat can be chipped while under general anaesthetic for another procedure such as neutering, so the kitten won’t feel it go in. Many kittens are chipped at the same time as being neutered, so it’s a common arrangement. If you want to avoid any discomfort at all, ask about it when you book, and the vet can do both in one visit.
Looking after your cat afterwards
Once the chip is in, there’s usually nothing to do. A small swelling can occasionally appear where the needle went in, and it usually settles on its own within a few days. Signs that need a vet are bleeding under the skin, an abscess near the implant site, or your cat seeming off colour afterwards. Adverse reactions are very rare, but contact your vet if you have any concerns after chipping.
You may also hear that chips can move. Microchips commonly shift a small distance from where they were implanted. This doesn’t hurt, very rarely causes problems, and the chip will still be picked up when scanned. You can read about side effects and how to report them in our guide to whether microchipping is safe.
When to get your cat chipped
In England, a cat older than 20 weeks must be microchipped. In Scotland, Wales and Northern Ireland, cat microchipping is optional.
Microchipping can be done at the same vet appointment as vaccination and neutering, before the kitten goes outside. Our guide to the best age to microchip a puppy or kitten goes into the timing. If you’re weighing up where to book, our page on where to get a puppy or kitten microchipped covers vets, charities and free schemes.
Registering the chip in your name
A pain-free appointment is only half the job. The chip itself holds only a number; your name, phone and address sit on a database linked to that number, so it’s the record that goes out of date, never the chip. Register your cat’s microchip with your current phone number and address, and keep it in your name if you move. Our cat microchipping page covers how it all works.
Microchipping is a quick appointment and almost always an uneventful one. What makes it count afterwards is the record attached to the chip, so register your cat on Pet Database in your own name.
