Can Rats use cat flaps? A Helpful Answer

  • MickAdmin
  • October 13, 2022

A common question I get asked is, “Can rats use cat flaps?” The answer is yes and no. It depends on the size of the rat and the size of the cat flap. If the rat is too big, then he won’t be able to fit through. If the cat flap is too small, the rat could get stuck. So it’s a case-by-case basis.


Can rats use cat flaps?


Cat flaps are a common feature in homes with feline companions, but they can also be used by other small animals.

While most people think of rats when they think of pests, these creatures are pretty intelligent and adaptable. Rat populations worldwide have been known to take advantage of human infrastructure, and cat flaps are no exception.

If there is a gap large enough for a rat to fit through, it will find its way inside.

In addition to being a nuisance, rats can also carry diseases that pose a risk to humans and pets. As such, it is essential to take steps to prevent them from entering your home in the first place.

If you already have a rat problem, sealing up any openings, including cat flaps, is essential for keeping them out.


Pet rats and cat flaps


The best way to figure out if your rat can use a particular cat flap is to take some measurements. First, measure the width of the flap.

Then, measure the height of your rat from his head to his rump. If the flap is more comprehensive than your rat’s measurement and taller than half of your rat’s size, then he should be able to fit through just fine.

Of course, even if your rat can physically fit through the cat flap, that doesn’t mean he’ll be able to use it effectively.

Another thing you need to consider is whether or not your rat has the cognitive ability to figure out how to open the flap.

This is where things get a bit more complicated. Some rats are more intelligent than others and can figure it out relatively quickly. Others may never figure it out at all.


How can I stop wild rats from using my cat flap?


There are several ways to prevent wild rats from using your cat flap.

One option is to install a spring-loaded flap that will close automatically after your cat has gone through.

You can also choose a flap operated by a radio collar, which will only open when your cat is nearby.

Another option is to install a security camera near the cat flap, allowing you to see when a rat is trying to enter and take appropriate action.

Whatever method you choose, keeping the area around the cat flap clean and free of food waste is essential, as this will attract rats and other pests.

By taking these precautions, you can help to keep your home free of unwanted visitors.



So can rats use cat flaps? Yes and no. It all depends on the size of the rat and the flap, as well as the cognitive abilities of the rat in question. If you’re ever in doubt, take some measurements and observe your rat’s behavior around the flap to see if he can figure it out.

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