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

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

Summer Safety Tips for Dogs: 7 Vet-Verified Ways to Stay Safe

Is there any better way to enjoy the warm months of summer than with your best friend? Summer is ideal for walks in...

Landseer Dog Breed: Info, Pictures, Care & More

Some of you may be with familiar with Nana, the black and white Landseer featured in Peter Pan. Landseer dogs are considered a...

How to Train a Dog to Not Be Aggressive When Someone Comes to the Door: 8 Vet Approved Tips

Door charging is one of the most frustrating and irritating behaviors that dogs can exhibit. It can make social interactions awkward and stressful....

How to Have Safe Outdoor Fun With Your Dog at Night: 10 Vet-Approved Tips

You don’t have to limit having fun with your dog to daylight hours; you can have just as enjoyable a time at night....

More related

One Year Free From Cruelty: Beagle Freedom Project Celebrates Anniversary of Closing Animal Testing Laboratory

When most of us picture a Beagle, we think of a floppy-eared, waggy-tailed, sniffing machine, merrily exploring their world, nose first. Sadly, their...

100 Funny Dog Name Ideas Based on The Simpsons

The Simpsons is the longest-running scripted television show in the United States. It first aired in 1989, and since then, it has resulted...

Pros & Cons of Getting a Cockapoo: Vet-Reviewed Breed Characteristics

So, you are thinking about getting a Cockapoo. The iconic combination of cocker spaniel and poodle is too adorable to resist, and now...

Can Dogs Have Chia Seed Pudding? Vet-Reviewed Health & Nutrition Guide

Chia seed pudding is a delicious vegan snack made by soaking chia seeds in plant-based milk. It’s often enjoyed as a breakfast or...

Keep reading

Authority Puppy Food Review 2026: Recalls, Pros & Cons

Review Summary A new puppy can bring a lot of excitement into your life! Along with the adorable pictures and play, there are some tough questions, like what you will be feeding your new bundle of fur. If you are...

Dogster_Authority Puppy Food Review

6 Pros & Cons of Putting Water in Kibble: Vet-Verified Nutrition Facts

Rehydrating dog food can be a really beneficial habit. It sounds like the perfect thing—you spice up your dog’s food bowl while providing extra moisture in the diet. Plus, it helps dogs who may have issues with chewing or appetite....

labrador retriever eating dry kibble from metal bowl

Can Dogs Eat Ritz Crackers? Vet-Reviewed Facts & Safety Guide

As dog owners, we often find ourselves asking, “Can my dog eat this?” Today’s question is about a popular snack, Ritz crackers. The answer as to whether or not dogs can eat Ritz crackers isn’t as straightforward as you might...

Can Dogs Eat Ritz Crackers

Can Dogs Eat Durian? Vet-Verified Nutrition Facts & Safer Alternatives

The durian fruit has gained a lot of attention for its pungent aroma rather than its taste or any health benefits. The fruit comes encased in a prickly shell, and “the king of fruits” has a smell that is described...

Dogster-Can-Dogs-Eat-Durian

10 Best Foods for Pregnant Dogs in 2026 – Reviews & Top Picks

Congratulations, you have a pregnant dog! Now, this is where the hard work really starts, which includes making sure she’s getting the right nutritionally balanced diet. After all, she is eating for six or maybe even seven puppies! She needs...

Pregnant dog eating food from the floor

Can I Claim Dog Food on My Taxes in 2026? Pet-Related Deductions Guide

Tax season is never fun. We always hope there are things we can claim when filing. Surprisingly enough, there are several cases where the cost of your dog’s food may be tax-deductible. Usually, pet-related expenses are considered personal expenses, so...

woman computing taxes with her dog

What to Feed a Pregnant Dog: First, Second & Third Trimesters (Vet-Approved Guide)

Good news! Your dog is expecting puppies! This is an exciting time in any pet parent’s life. But it can also be overwhelming if this is your dog’s first litter. You want to make sure you are giving your dog...

Sausage dog pregnant laydown at the bed Dauchand

Why Dogs Love Cheese – And How to Pay the Cheese Tax Safely

Ever notice your dog’s tail wagging uncontrollably when you pull out a block of cheese? You’re not imagining it; most dogs genuinely love cheese. But what makes this creamy treat so irresistible to our furry friends? And more importantly, is...

Jack-Russell-Terrier-begging-the-hostess-cheese