Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Is My Cat Attacking The Mailman? Possible Reasons & Prevention Tips

Share

Mailman delivering mail

There are several reasons that your cat may decide to attack the mailman. In many cases, cats attack them for the same reasons that dogs do: out of territorial instincts or playful curiosity.

In this article, we go over all the potential reasons that your cat may attack the mailman and provide potential fixes.

divider cats oct 2024

The 6 Possible Reasons Cats Attack the Mailman

If your cat is attacking the mailman, it may seem amusing at first. However, cats can do some pretty serious damage, especially if they really go after the mailman.

In order to prevent these attacks from occurring, it’s important to figure out why your cat is going after the mailman to begin with. There are tons of potential reasons.

1. Play

In some cases, your cat may just be trying to play with the mailman. Very young cats are especially prone to this, as they tend to be the most playful. Some younger cats really get into their play, and it can be easy to misconstrue their playfulness as aggression. Often, these cats may stalk and chase the mailman. They will probably recover quickly from the session and often won’t get very “fluffy” or hiss.


2. Territorial

Norwegian forest cat male marking its territory
Image Credit: Elisa Putti, Shutterstock

Cats are naturally territorial, though some are more territorial than others. Your cat may see the mailman as an intrusion on their home. For braver cats, this may lead to them chasing the mailman away—or at least attempting to. In many cases, this will involve your cat getting fluffy and hissing.


3. Fear

Sometimes, your cat may be fearful or shy of strangers. If the mailman encroaches too closely on their space, they may turn aggressive. Often, cats will try to escape something scary by running home, which is exactly where the mailman is going. Your mailman doesn’t mean to intrude on your cat’s safe space, but that’s exactly what your cat might think they’re doing!


4. Boredom

tired or sick cat
Image By: Kginger, Shutterstock

If your cat is bored, they may be looking for any possible way they can have some fun—including chasing the mailman. Chasing the mailman can be an exciting way for them to run off some steam and entertain themselves. Often, this will be play-driven, but it can occur in older cars with a higher frequency.


5. Past Negative Experiences

If your cat was scared by the mailman in the past, they may associate the mailman with negative emotions. Some cats react to this by becoming aggressive in an attempt to avoid whatever bad thing happened to them in the past.


6. Medical Issues

vet holding sick cat
Image Credit: megaflopp, Shutterstock

Rarely, medical problems can cause strange behaviors, like chasing the mailman. Often, neurological problems are the most common issue that would cause this problem, but hyperthyroidism is another potential illness, too. Of course, the best way to tell if this is the case is to visit your vet.

divider 1 paws

Stopping the Mailman Attacks

To prevent your cat from attacking the mailman, there are several steps you’ll need to take. The reasons we discussed previously will have a huge impact on exactly what you can do to stop this behavior.

1. Figure Out Why

If you haven’t figured it out already, you need to find out why your cat is attacking and chasing the mailman. Check for specific triggers that cause your cat to attack. Sometimes, these will roll over to other strangers too. Does your cat attack everyone who comes to the front porch? Are they showing other strange behaviors?

Very targeted aggression is likely caused by a bad past experience. However, all-around playfulness may signal that your cat just wants to play with the mailman.

Cat about to attack mailman
Image By: Vaclav Sonnek, Shutterstock

2. Keep Your Cat Inside

Cats do not do as much damage as dogs do. However, your cat still doesn’t need to be attacking the mailman. Therefore, while you work on stopping the attacks altogether, it’s important to keep your cat inside. This step also prevents the behavior from becoming a habit. Some cats may just keep attacking the mailman because they always have, even after you’ve fixed the underlying cause.

Sometimes, just removing your cat from the mailman for a month or more is enough to “reset” their behavior and prevent further attacks, especially when they are younger.


3. Desensitize Your Cat

No matter why your cat is attacking the mailman, desensitization is often called for. This process makes your cat stop seeing the mailman as a threat or something new for them to play with. You can do this by giving your cat treats every time they see the mailman. If you’re home, you can do this by hand. Other times, a treat dispenser placed by the front door or window is a good option.

You can even have a friend dress up as the mailman and come to your door, allowing you to time the treats a bit better.

If your cat gets upset around all strangers, desensitizing them to strangers in general will often make the mailman less scary too.

shelter cat rubbing its head on a person's hand
Image By: Evgeniy Medvedev, Shutterstock

4. Provide Enrichment

Even if your cat isn’t attacking out of boredom, providing extra enrichment can be helpful. Many cats experience increased anxiety when they don’t get enough enrichment, which can lead to increased playfulness, fear, and territorial behaviors. Wearing your cat out with plenty of toys, playtime, and climbing structures can help limit these poor behaviors.

Some cats are simply more playful or energetic than others, making them require more stimulation than others. Therefore, there isn’t a one-size-fits-all guideline on how much exercise or mental stimulation your cat needs.


5. Consult With Your Vet

In some cases, you may need to consider getting your cat to see your vet. If your cat is showing other weird behaviors or seems suddenly very aggressive, a vet visit is called for. Often, cats are very good at hiding their illnesses. Sometimes, you don’t get any other signs that your cat is ill except for a few strange behaviors.

vet and assistant holding cats
Image By: 4 PM production, Shutterstock

divider 1 paws

Conclusion

It isn’t normal or good behavior for your cat to chase the mailman, even if they see it as good behavior in their eyes. Territorial cats need to learn that not everyone is a threat to their home and to allow the mailman to pass through unhindered. It’s your job to teach your cat these correct behaviors.

Start with the “why” first. Often, figuring out why your cat is doing something can help you determine how to fix it. Practically all cats benefit from desensitization and more added playtime in their day.


Featured Image Credit: Pixel-Shot, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

The 10 Common Causes of Sudden Death in Cats (And Which Ones Are Preventable)

Most cat owners don’t think much about heart disease, internal hemorrhage, or viral infections until they’re staring at an empty bed. Sudden death...

Ask Dr. Paola – Help! My Cat Suddenly Has Dandruff! (March 30, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Your Cat Keeps Vomiting After Eating: Here’s What’s Going On

Cats vomit. It’s one of the less glamorous facts of life with a feline, and most cat owners have cleaned up more than...

Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

Why Do Cats Eat and Chew on Paper? 4 Reasons for This Behavior

Believe it or not, cats chewing on cardboard and paper is a problem that some pet parents encounter. Sometimes, owners mistake their cats...

10 Best Cat Urine Removers for Hardwood Floors in 2026 – Reviews & Top Picks

When you clean up cat urine, you want the smell to disappear as quickly as possible. You also don’t want to deal with...

Himalayan Cat Health Problems: 6 Vet-Reviewed Issues

The Himalayan cat is a beautiful Asian breed with long hair and a “smooshed” face. They are a cross between Persians and Siamese,...

10 Best Hypoallergenic Cat Shampoos of 2026 – Reviews & Top Picks

Just like us, our cats can have sensitive skin. If your cats can’t handle all the chemicals and fragrances that lots of companies...

Keep reading

Why Do Feral Cats Cry at Night – 7 Vet Reviewed Reasons

Have you ever been kept up at night with the sounds of cats vocalizing outside your bedroom window? We’ve all been there, which can be frustrating and disrupt our sleep patterns. If you have feral cat colonies or a stray...

Scared egyptian Mau cat at night in the shadow

7 Best Cat Cone Collars of 2026: Reviews & Top Picks

If your cat is licking a spot on their body to the point of baldness or they are recovering from surgery, you’ll need to use a cone collar, also known as an e-collar and the “cone of shame.” It effectively...

orange-cat-with-veterinairy-cone

10 Essential Cat Grooming Supplies To Get You Started

So, you’re considering getting a new cat? Congratulations! If this is your first cat, you might wonder which supplies your new kitty will need once you bring them home. For example, what do you need to keep your cat clean...

Norwegian Forest Cat Being Groomed While on Human

Is Vanilla Essential Oil Safe for Cats? Vet-Approved Facts & FAQ

Essential oils come from extracting oils from certain plants and flowers, and vanilla essential oils come from fermented vanilla beans. You can use vanilla essential oils for many things, such as flavoring agents in foods and beverages, in oil diffusers...

Catster_Is Vanilla Essential Oil Safe for Cats

Why Do Cats Trill & What Does It Mean? Vet-Verified Feline Vocalization Facts

Cats make quite a few different noises, and one of the cutest that we’ve ever heard is trilling. This is a blend between a meow and a purr, and each cat can make their own distinctive version of this sound....

cat meowing

Is It True That All Cats Spray? Vet-Verified Facts & FAQ

Even though all cats have the ability to spray, not all of them do it. This is good news for cat owners. You may have a cat that never sprays at all. Spraying means the cat backs up against a...

tabby cat spraying outdoors to mark territory

Cat Butts: How They Provide Crucial Info About Your Kitty’s Health (Vet-Verified)

Your cat’s butthole may not be the most glamorous aspect of feline anatomy, but it can provide valuable information about your kitty’s health. Let’s discuss what a healthy cat butt should look like and most importantly, what can be a...

Close up of orange and white cat's butt

Only Natural Pet EasyRaw Freeze Dried Treats Review 2026: Pros, Cons, & Verdict

Three weeks ago, I introduced you to Only Natural Pet, a Colorado-based online retailer of natural pet products. While I’ve been a customer of ONP pretty much since its inception in 2004, I never actually tried any of their products....

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.