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.

Can Dogs Tell When You’re on Your Period? Vet-Verified Senses & Behavior Insights

Share

dog hugging owner

When you’re on your period your body goes through hormonal fluctuations that manifest differently. From tiredness and cramps to mood swings, there are a lot of changes that dogs might sense. So, do dogs know when you’re on your period?

Dogs can smell menstrual blood and changes in your body’s scent, which means that most dogs can probably tell when women are on their period, however, we rely on anecdotal reports and have no scientific data to back this up. Your dog sensing that something is different can lead to a change in their behavior, including sniffing and your dog wanting to cuddle and get closer to you.

divider dog paws 2 oct 2024

A Dog’s Sense of Smell

Dogs have very powerful senses of smell that are far more powerful than those of humans. They are especially capable of smelling blood and some of the best sniffers can outperform the most advanced scientific equipment when detecting blood on surfaces and items that have been washed multiple times.

As such, they don’t have a problem smelling menstrual blood when your period starts.

Hormonal Changes

To date, the dogs’ ability to detect women’s hormonal changes has not been scientifically proven. Still, there are reports of owners claiming that their dog can sense their period, ovulation, or pregnancy. Dogs do seem to be able to sense these hormonal changes, however, it’s not clear if it’s related to a change in body scent or changes in your behavior.

Emotions

Dogs can also detect emotions, so if your period is making you feel lousy and stomach cramps are making you tetchy, your dog will be able to detect these psychological changes. This is one of the reasons why dogs are so good as therapy animals, and it is also why they make such great companions. They know when we need extra affection and are typically only too happy to provide it.

dog licking woman's hand
Image Credit: Krakenimages.com, Shutterstock

divider dog paws 3 oct 2024

The 4 Common Changes In Your Dog’s Behavior

When they do sense these changes, whether because they can smell menstrual blood or detect hormonal changes, dogs tend to act differently. These changes can manifest in different ways.

1. Comforting Behavior

Dogs are our companions, and they are said to be our best friends because they instinctively know when we need attention or affection. This may be true of your dog when you are on your period. You might notice them curling up on your lap more often, giving you kisses and pats, or even just popping in to check on you.


2. Excessive Sniffing

If your dog can smell your period, they may be inclined to try and get a better smell of the scent, primarily to check what’s going on.

If you’ve been comfort eating, you may also find your dog is sniffing you because you have crumbs on you, or because they can detect the odor of whatever you were eating.


3. Licking

One of the ways dogs may show affection is by licking. It is an instinctive action that is meant to mimic the feeling of comfort they received as puppies when their mothers licked them. If your dog notices that you’re feeling down or are in pain, they may be more likely to lick you as a way of showing they care.


4. Neediness

When your dog detects a change in your hormones, they might act differently around you. This might mean your dog becomes more attentive, but it might also mean they show signs of neediness. Your dog is likely trying to comfort you and help, and you might notice them wanting more cuddles and more petting.

woman smelling her golden retriever
Image Credit: eva_blanco, Shutterstock

divider dog paws 2 oct 2024

Can Cats Tell When You’re on Your Period?

Like dogs, cats have very sensitive senses of smell. As such, many owners also report that their cats can tell when they’re on their period, too. Some cats may become more clingy or needy and might show you more attention, but many cats are indifferent to the changes, so you might not notice any changes in behavior.

What About Other Animals?

Whether an animal acts differently around you when you’re on your period depends primarily on their senses of smell and their reaction to scent changes. Rats and other rodents have a very good sense of smell and they may react differently if they smell anything on the person who picks them up.

On the other hand, birds’ sense of smell varies among species and their reactions can vary depending on this.

divider dog paws 2 oct 2024

Conclusion

Dogs are attentive and attuned to our emotions, and they perceive the world primarily through their senses of smell and hearing. As such, they can detect changes in our body scent, and they can smell period blood. This can lead to dogs acting differently when you are on your period.

Changes include neediness, comforting behavior, and a greater likelihood of them sniffing and licking you. It isn’t usually anything to worry about, although you can discourage your dog from sniffing you while making the most of the opportunity for an extra cuddle on the sofa.


Featured Image Credit: savitskaya iryna, 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

Can a Relationship Work When One Person Doesn’t Like Dogs? Tips & When to Walk Away

For dog owners, a partner who doesn’t like dogs isn’t a minor quirk to overlook. Dogs aren’t a hobby you can scale back...

Good Luck or Bad Luck? The 13th Floor Rescue of a Dog Trapped on a Balcony for Two Days

In many cultures, the number 13 is considered bad luck, and while most people don’t put much stock in superstitions these days, there...

Ask Dr. Paola- Help! My Dog is Really Thin! (May 4, 2026)

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

Saying Yes When It Matters Most: Coco’s Heart Dog Rescue

In the world of animal rescue, some organizations focus on one species, one type of care, or one specific mission. Coco’s Heart Dog...

More related

Labrador Retriever Puppies for Sale in Massachusetts: 2026 Breeders List

One of America’s favorite dogs is the Labrador Retriever, best known for its companionability and loyalty. The Lab is the icon of the...

Dogs With Dreads: 8 Mop Dog Breeds (With Pictures & History)

The term “dreads” is most commonly used for human hair. Dogs’ fur has a much different texture, so it’s rare to find a...

Everything You Want to Know About Bed Bug Detection Dogs

Bed bugs were eradicated in the United States in the 1950s through the late 1990s.¹ Unfortunately, a new strain of bed bugs came...

The Honest Kitchen Dog Food Review 2026: Our Expert’s Breakdown

The Honest Kitchen was founded in 2002 and is the first pet food company to get the US Food and Drug Administration’s (FDA)...

Keep reading

11 Best Canned & Wet Dog Food For Pitbulls in 2026: Reviews & Top Picks

As the person responsible for your dog’s well-being and health, you likely take your pet’s nutrition very seriously. Canned and wet dog foods are great options for many pet owners as they are easy to use, and pit bulls generally...

pitbull puppy eating from plate

Can Dogs Eat Sprinkles? Vet-Verified Nutrition Facts, Risks & Alternatives

Having parties and celebrations for dogs has become more common in recent years. While there’s absolutely no problem with planning parties for your dog, it’s important to provide dog-safe food and snacks. A common treat present at parties is sprinkles....

Dogster-Can-Dogs-Eat-Sprinkles

Can Dogs Eat Ice Cream? Vet-Verified Health & Safety Guide

Ice cream is a yummy treat many people enjoy, especially during the hot summer months. For dog owners, it’s common to see their pooches begging for a taste, watching on with pleading, imploring eyes, hoping a scoop will suddenly head...

Can Dogs Eat Ice Cream

Blue Buffalo Puppy Food Review 2026: Pros, Cons, Recalls & FAQ

Blue Buffalo Puppy Food comes in various flavors and recipes and is manufactured by Blue Buffalo, one of the first brands to prioritize using whole food, “premium” ingredients. Founded initially as a small family company in 2003, the success of...

Dogster_Blue Buffalo Puppy Food Review

The Honest Kitchen Essential Clusters – Don’t Call It Kibble!

As a veterinarian and owner of five (yes, five) dogs, finding a pet food that delivers outstanding nutrition and high-quality ingredients has always been important, but finding one that doesn’t cost the earth, require me to commit to a subscription,...

The Honest Kitchen_EssentialClusters_4

Can Dogs Eat Relish? Vet-Reviewed Facts & FAQ

Most dogs are not picky when it comes to what they are eating. They’ll scarf down almost anything that a human companion offers them, and they love rummaging through the garbage for scraps or snatching a piece of food found...

Can Dogs Eat Relish

Can Dogs Eat Spinach? Vet-Reviewed Facts & FAQ

If your dog already eats nutritionally balanced dog food, they should get all the necessary vitamins and minerals. However, if you want your dog to get an additional boost by eating vegetables, you might wonder if it’s okay to feed...

Can Dogs Eat Spinach

7 Best Dog Foods for Pitbulls to Gain Muscle in 2026 – Reviews & Top Picks

As pet owners, we all want our companions to thrive and give them the best we can give them when it comes to their nutrition. If you own a Pitbull, you understand that public perception has missed the mark, and...

pitbull eating

Love Dogs? So Do We! Join the Dogster 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 Dogster Email Newsletter