Get

In Your Inbox

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

Sex-Related Aggression in Dogs: Vet-Reviewed Facts & Safety Tips

dogs fighting

Dealing with a dog that’s started showing signs of aggression can be incredibly stressful. While you still consider them your loyal, loving companion, the thought that they might snap at any moment can be incredibly terrifying.

One of the first things that you should do when your dog starts acting aggressively is to try to pinpoint the source. There are many possible causes; dominance, fear, and anxiety are a few of the most common ones.

One that shouldn’t be overlooked, however, is their sex. Your dog’s raging hormones could be whipping them into an agitated state, making them more likely to lash out at anything in their path.

dogster paw divider

What Is Sex-Related Aggression?

If you’ve ever watched a nature documentary, you already know that the urge to procreate often causes violence between animals looking to breed. Dogs aren’t immune to these urges, and the hormones coursing through their bodies could cause them to become over-stimulated and agitated. That agitation will need an outlet, and unfortunately, that outlet is often violence.

Sexual aggression is most likely to occur around a female in heat, and it’s usually male-on-male or female-on-male, though females can be aggressive toward other females too.

Sexual violence usually happens around adolescence, though intact mature dogs of any age can be susceptible to it.

aggressive dogs
Image by: Alexas_Fotos, Pixabay

How to Recognize Sex-Related Aggression in Dogs

Violence related to sex rarely occurs without plenty of warning signs beforehand. If you can recognize these signs, you might be able to head off the aggression at the pass.

If you notice any of the following signs, especially in a male dog, watch for potential aggression:
  • Stubbornness or a refusal to follow commands
  • Barking or lunging at passerby (especially if this is out of character or happening more frequently than usual)
  • Fence fighting
  • Pacing, whining, or howling at windows
  • Obvious urge to escape or roam
  • Destructive behavior or digging
  • Excessive grooming of the genitals
  • Increased territorial behavior, especially increased marking or urination

What to Do About Sex-Related Aggression

There are a few things that you can do to solve sex-related aggression in your pup. However, there’s one thing that you should never do: Let your dog “get their urges out.”

While this may seem counterintuitive, the fact is that allowing them to mate will just reinforce the behavior; it will let them see what they were missing, in essence. If anything, this will make aggression more likely, so you shouldn’t allow it to happen under any circumstances.

With that out of the way, let’s take a look at what you should do instead.

aggressive dog
Image by: zoosnow, Pixabay

Have Your Dog Spayed or Neutered

This is the quickest, easiest, and most effective way to solve sex-related aggression. If you take away your dog’s gonads, their hormones and drive will also decrease. This won’t solve all aggression issues, of course, but it should nip sex-related problems in the bud. It does not happen overnight, though; it can take a while for some existing circulation hormones to eventually fade.

Spaying or neutering your pet has other benefits. You won’t have to worry about dealing with any unwanted puppies, and dogs that have been fixed have been shown to live longer than their unaltered counterparts. In addition to solving aggression, it will reduce marking, eliminate the issues that go along with your dog going into heat, and make them less likely to run away.

If you’re hoping to breed your dog or you have another reason that you can’t get your dog fixed, there are still actions that you can take to curb sex-related aggression.

Keep Them Away From Other Dogs

If you have a male dog, it’s important to keep them away from females in heat. This can be easier said than done, as your dog can pick up on the smell of a female in season from quite a distance.

You’ll want to reinforce your fence and make sure there aren’t any gaps that they can escape through, and you’ll need to be careful not to leave doors open. This method will require constant vigilance because you’ll never truly solve the problem. You’ll just have to stay on top of the situation as long as there’s a nearby dog in heat.

If you have a female, you’ll want to keep them indoors as much as possible when they’re in heat. You’ll have male dogs coming from all around if they catch a whiff of her, and dogs can be quite ingenious when it comes to breeding. After all, if “Jurassic Park” has taught us anything, it’s that life finds a way.

german shepherd dog behind the fence
Image Credit: Mimzy, Pixabay

Pay Attention to Your Dog’s Cycle

A female dog will be much more prone to violence toward males at certain parts of her cycle, so it’s important to keep track of where she is in her cycle at all times. Specifically, at the beginning of your dog’s proestrus cycle, she’ll be prone to reject the advances of any suitors. She usually does this quite violently, so if you try to breed her prematurely, you might end up with a fight on your hands.

Proestrus is the first stage of your dog’s cycle, and it usually lasts about 9 days or so. After proestrus, she’ll move into the estrus stage, at which point, she’s ready to accept a mate. This is when you should attempt to introduce a male. Be aware, though, that she may become more prone to aggression toward other unspayed females at this time.

Breeding your dog can be fun and rewarding, but it requires you to stay on top of the changes in your dog if you hope to avoid a bad situation.

Use Training to Redirect Their Attention

You should work on training your dog regardless of whether they’re prone to aggression, but obedience work can really come in handy when their hormones are raging out of control. To be clear, training won’t solve the problem, but it could buy you a few valuable seconds in an emergency.

Commands like “leave it,” “come,” and “stay” are all essential. They can prevent your dog from running away or lashing out, giving you enough time to intervene and regain control of the situation.

You’ll have to make sure that these commands are firmly ingrained, though. It’s hard for dogs to ignore the call of nature, so the pull of your command has to be more attractive than the allure of a mate.

dogster paw divider

It’s Important to Take Sex-Related Aggression Seriously

Sex-related aggression is a big problem for dogs, and it can have disastrous consequences. If you’ve noticed that your dog is prone to it, you should take action right away, before something terrible happens.

The easiest and most effective way to solve the problem is to get your dog fixed, but if you don’t want to do that, there are other options to look into.

The important thing is to just take action immediately. You don’t want your dog—or someone else you care about—to suffer needlessly because you didn’t act soon enough.


Featured Image Credit: Dmussman, Shutterstock

How useful was this post?

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

Help us improve Dogster 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

Do Dogs Have a Dominant Paw? Is Your Dog a Lefty or Righty? What Science Says

While the majority of humans are right-handed, dominant paws in dogs don’t lean heavily towards one side. Studies show that some dogs have...

Does a Great Dane Have Webbed Feet? Breed Characteristics & Facts

The Great Dane is a unique breed of dog that make a fantastic choice for a pet. Nicknamed “gentle giants”, Great Danes are...

33 English Dog Breeds (With Info & Pictures)

The merry old land of England brought the world everything from Shakespeare’s sonnets to fish and chips. Among the contributions of the English...

E-Cloth Cleaning Product Review 2025: An Expert’s Breakdown

Anyone who knows me, knows I like to keep a clean and tidy home. So, living with two big dogs and an adult...

More related

How Long Will It Take To Become a Dog Groomer? Facts & FAQ

If you are a dog lover who wants an exciting and profitable career in working with dogs, then a dog groomer might be...

How to Choose a Puppy From a Litter (3 Vet-Approved Tips)

Choosing the correct puppy from a litter can seem like a huge decision. After all, what happens if you don’t choose the right...

Why Does My Dog Chatter Its Teeth? 8 Vet-Verified Reasons

Dogs have a knack of being able to surprise you, even after years of ownership. You might think you know everything about your...

150+ Bullmastiff Names: Tough, Cute & Perfect Ideas for Your Bullmastiff

Bullmastiffs can be notoriously difficult to name. They’re huge dogs, but that doesn’t necessarily make tough names the only suitable ones for them....

Keep reading

Valu Pak Dog Food Review 2025: Pros, Cons, Recalls & FAQ

Review Summary Valu Pak is owned and manufactured by Specialty Feeds, a US company that has been making pet food for more than 50 years. It is a reasonably priced food, and while there are some ingredients that might be...

Dogster_Valu Pak Dog Food Review

10 Best Dog Foods for Shih Tzus in 2025 – Reviews & Top Picks

Shih Tzus don’t have their own specific dietary requirements, as such, but they are a very small dog breed so they need to get all of their nutritional requirements in a comparatively small amount of food and without too many...

shih tzu dog eating outdoors

How Much Food Should My Havanese Eat Per Day? Vet Reviewed Guidance

A lot goes into feeding a dog, so if you’re stumped on how much to feed your Havanese, you’re not alone. The truth is, there is no set answer on how much to feed your Havanese. Each dog requires a...

Havanese dog eating

Can Dogs Eat Cornstarch? Vet-Approved Nutrition Guide & FAQ

Cornstarch is a commonly used ingredient in cooking and baking, often as a thickening agent for casseroles or soups. It is an excellent source of fiber and, as an added ingredient in many dog foods, is a wiser choice for...

Can Dogs Eat Cornstarch

Can Dogs Eat Blackberries? Vet-Approved Facts & FAQ

As man’s best friend and a curious taster, your dog will likely join you foraging for blackberries in the forest, or welcome you home from the grocery store after buying a carton full of berries with equal gusto. They want...

Can Dogs Eat_blackberries

Can Dogs Eat Gummy Worms? Vet-Verified Nutrition Facts & Alternatives

We take our dogs with us wherever we go, spoil them on holidays, and consider them part of our family. So, it makes sense if you’d like to share your favorite activities and snacks with them, too. But what if...

Dogster-Can-Dogs-Eat-Gummy Worms

Can Dogs Eat Shiitake Mushrooms? Vet-Verified Nutrition Facts & FAQ

Mushrooms are a complex food. While many types offer a nutrient-loaded, low-calorie, savory, and meaty addition to your recipes, others can be deadly for both humans and dogs. Therefore, if you’re staring at the shiitake mushrooms on your plate and...

Can Dogs Eat Shiitake Mushrooms

Can Dogs Eat Sherbet? Vet-Reviewed Health & Safety Guide

Eating a cold and refreshing bowl of sherbet on a hot summer day sounds incredibly appealing, and it’s quite likely that your dog is watching every spoonful going into your mouth. This is the point when you wonder if it...

Can Dogs Eat Sherbet