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.

What Is Dog Mismating? Vet-Reviewed Facts & Tips

dog sniffing dog in heat

Dogs are fun, intelligent creatures that many people enjoy spending their lives with. However, overbreeding and mismating can result in unwanted animals that end up homeless and suffering. Many unwanted dogs face terrible fates, including death. Luckily, we humans have a great deal of control over how many dogs exist in the world at any given time. Knowing about dog mismating is the first step that we can take toward gaining the knowledge and empowerment that we need to ensure that we do not bring dogs into this world that will not be loved and properly cared for. In short, dog mismating is when a female dog gets pregnant by accident.

Dogster divider_v1_NEW_MAY_24_

What Is Dog Mismating?

In short, dog mismating is when a female dog gets pregnant accidentally, when it is not planned in any way. Female dogs generally go into heat two times a year, about 6 months apart. This offers plenty of opportunities for them to get pregnant if they are not spayed and can mingle with unneutered males. Mismating results in unplanned and/or unwanted pregnancies and stressed human family members who do not know what to do with the puppies that their dog has unknowingly conceived.

Mismating is also the term to call termination of pregnancy or abortion. This should be discussed with a vet on a case-by-case basis. Not all dog encounters will result in mating, and not all mating will result in pregnancies.

Note: The intention of this post is to provide general medical information and not moral guidance. Any decisions you make should be discussed and overseen by your veterinarian. Your vet knows your family’s unique circumstances and can provide individualized recommendations for the best possible outcome.

pregnant Dogue de Bordeaux
Image Credit: Jan Dix, Shutterstock

What Can Be Done About Mismating?

Mismating can be completely avoided by having dogs spayed or neutered. If you plan to breed your dog in the future or spaying or neutering is not an option, it is vital to make sure that your pooch is constantly supervised when outside of their home and where they have access to other non-spayed or unneutered dogs.

If you own a female dog, make sure you know when her heat cycle starts and ends so she can be walked on a leash and avoid busy places and times throughout the cycle. If you are unsure of when your bitch goes into heat, you should speak to a vet to clarify what are the signs of being in heat; and if your dog does not show them, to know what the reason behind it is. If you own both a male and female that are intact, we recommend that you find alternative living arrangements for the male throughout the entirety of your female’s heat cycle. The male can be reintroduced to the home after the heat cycle ends. If necessary, reintroduce the male and female slowly in the yard until they are comfortable around each other again.

Beagle on estrus cycle
Image Credit: Sigma_S, Shutterstock

What to Do if Mismating Occurs

You may not know if mismating occurred until after your dog is heavily pregnant or even until your dog’s puppies are born, in which case, it is too late to do anything about it. You can do your best to care for the puppies and give them the best life possible, but you obviously cannot take the pregnancy back.

If you find out that your dog is pregnant when you do not want her to be, there are a couple of things that you can do about it. First, you should speak to a veterinarian to go through your options for termination of pregnancy. Alternatively, you can try to find a person or organization that is willing to take the puppies in and make sure that they get good homes.

Did you know you can speak to a veterinarian without having to travel? Just head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

Dogster divider_v1_NEW_MAY_24_

In Summary

Dog mismating should not be taken lightly. It can lead to an overwhelming number of unwanted dogs in your community that can take a toll on the dogs and the humans who live around them. Hopefully, our guide has shed a bit of light on the topic and given you the knowledge and ideas needed to keep your dog from mating with another dog when you do not want them to.


Featured Image Credit By: atiger, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* 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 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

12 Best Dog Foods for Pitbulls in 2025 – Reviews & Top Picks

Owning a Pitbull and another bully-type dog comes with its own unique set of challenges. One of the things you shouldn’t have holding...

Do Dogs Sweat? How Do They Cool Down? Vet-Verified Facts

When the weather heats up and we start turning on fans and air conditioners to keep ourselves from sweating, it’s not uncommon for...

Why Does My Dog Lick My Legs? 5 Vet-Verified Reasons

Our canine companions are the absolute cutest, but they can also be kind of slobbery. While some pups just drool a little here...

7 Miniature Schnauzer Haircuts (With Pictures)

Miniature Schnauzers are loosely curly, long-haired dogs that require regular grooming. There are so many creative haircuts for little dogs, how do you...

More related

My Dog Ate a Silica Packet: What to Do (Vet Answer)

There are things in our environment that can pose safety risks to our pets that we don’t always consider until ingestion occurs by...

14 Small White Dog Breeds – Info, Pictures & History

There are several small white dog breeds, and due to their charming appearance, friendly demeanor, and ability to fit into various lifestyles, they...

Do French Bulldogs Bark a Lot? How Much & How to Stop It

While barking is a way for canines to communicate, some breeds are more vocal than others. For instance, Basenjis “yodel,” Shiba Inus “scream,”...

Chocolate Labrador Dog Breed: Info, Pictures, History & Traits

A chocolate Labrador is a particular color of the Labrador Retriever. These dogs are known for being very friendly and outgoing. They’re one...

Keep reading

Can Dogs Eat Mealworms? Vet-Approved Nutritional Guide

Does the idea of cozying up to a fresh bowl of mealworms appeal to you? Once you get past the ick-factor, you might be surprised to find out that mealworms and other insects are on track to becoming a big...

Can Dogs Eat Mealworms

Can Dogs Eat Artichokes? Vet-Verified Nutrition Facts & FAQ

Artichokes are large thistle-like perennials grown for their edible flower buds. Their leaves, stems, and roots are often used to make extracts for medicines, but the plant can also be used in recipes like dips and side dishes. The plant...

Can Dogs Eat Artichokes

Can Dogs Eat Cardamom? Is It Safe? Vet Reviewed Dietary Guidance

If you’re a dog owner and a fan of flavorful spices, you might be wondering whether it’s safe to share your love for cardamom with your furry friend. Cardamom is a popular spice used in various cuisines worldwide and is...

Can Dogs Eat_Cardamom

5 Dog-Friendly Burrito Recipes You Can Make Today (Vet Approved)

Did someone say burrito? Burritos have become a desired cuisine in the U.S., and we’re sure no dog would turn their nose up at the chance for a taste. However, burritos cooked for humans are not particularly friendly for dogs,...

Dog-Friendly Burrito Recipes You Can Make Today

Can Dogs Eat Apple Pie? Vet-Verified Nutrition Facts & Info

We can share a lot of our food items with our dogs, permitting we know the safety and nutritional quality. After all, our dogs are omnivorous just like us. However, when it comes to sweet treats and heavily processed goods,...

Dogster-Can-Dogs-Eat-Apple Pie

Can Dogs Eat Carne Asada? Vet Reviewed Facts & FAQ

You may be familiar with the phrase “puppy dog eyes.” That is why saying “no” to a dog is next to impossible when they want something, whether they want to play, get up on the couch with you, or eat...

Can Dogs Eat_carne asada

Can Dogs Eat Jasmine Rice? Vet-Reviewed Facts & Tips

Every dog enjoys the occasional treat added to dog food. Dog owners love to spoil their canine kiddos with extra treats, as they worry about them getting bored eating the same thing day in and day out. However, you should...

Can Dogs Eat Jasmine Rice

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

With their short legs and long backs, Dachshunds are among the most recognizable breeds in the world. Their sausage shape gives them the adorable moniker “wiener dogs”, and they’re a popular small breed for pet owners of all kinds. Because...

dachshund dog eating from elevated bowl