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.

Do Dogs Shed More When in Heat? Vet-Approved Possible Reasons & Tips

Share

japanese akita inu puppy dog posing with brush and excess fur or hair shed

Dogs tend to live by their own rules, especially when it comes to grooming. They shed their coats wherever they please, leaving a mess behind for us humans to take care of. But are dogs more susceptible to shedding when they are in heat? The short answer is that research doesn’t directly support it, though it’s possible other factors may be causing the issue. Here’s what you should know about this topic.

divider single dog paw oct 2024

Hormones Shift When Dogs Are in Heat

A dog’s heat cycle affects the way that hormones flow in their body. When a female dog reaches the estrus phase of her heat cycle (meaning she’s ready to mate), her progesterone levels shoot up and her estrogen levels dip low. These changes are what make the female dog receptive to mating for reproductive purposes. Some people may think this can also be responsible for excess shedding, though we aren’t aware of any data to support this statement.

Higher progesterone levels stay constant throughout both the estrus and diestrus cycles. The diestrus cycle is when the female’s body is preparing to maintain a pregnancy, which is one thing that progesterone helps to do. The diestrus stage ends when progesterone levels return to their baseline levels, which takes approximately 2–4 weeks.

Dog Heat Cycle
You are free to use this image but we do require you to link back to Dogster.com for credit

divider dog paws 4 oct 2024

Other Reasons That Your Dog May Be Shedding More

However, there are many other reasons that your dog may be shedding more than usual. Here are other causes for excess shedding to consider if hormonal changes are not to blame.

1. Parasites

The job of parasites is to consume nutrients to stay alive and multiply. Many types of parasites do this by latching onto animals like dogs and leaching nutrients from their bodies. Exterior parasites suck nutrients from the skin and often cause itching, which damages the hair and can result in hair loss.

woman-and-sick-old-german-shepherd-at-veterinarian
Image Credit: Beach Creatives, Shutterstock

2. Trauma

If your dog is licking, itching, or nibbling at their skin frequently, these actions can result in the skin becoming irritated and the hair falling out. They could be attacking themselves due to health problems, such as allergies, pain, or even anxiety. If you notice that your dog’s body has bald patches, it’s a good idea to schedule a checkup appointment with your veterinarian.


3. Thyroid Problems

Thyroid problems can create hormonal imbalances that will persist until they are addressed and properly treated. If excessive shedding is a side effect of hormonal imbalances due to thyroid problems, the shedding will remain in excess until the thyroid is in good health again.

sick border collie dog at the vet
Image Credit: antoniodiaz, Shutterstock

4. Stress

Changes in a dog’s daily routine, moving them to a new home, expecting them to welcome a new human (or pet) family member, and making diet adjustments can all cause stress. When a dog gets stressed out, they are at risk of excessive shedding, though the physiology of this phenomenon is not entirely understood. Taking steps to reduce your dog’s stress levels can help reduce the amount of hair that they are shedding.


5. Cancer

This disease can put a dog’s body through significant stress, which can result in problems like excessive shedding. The immune system is typically compromised, and the dog is susceptible to more illnesses, parasites, and other problems that will affect their coat health. If a serious issue like cancer is causing your pet’s excessive shedding, other signs are likely to be present. These may include lethargy, nausea, changing bathroom habits, and disinterest in food, walks, and/or playing.

Cancer is a complex topic, if you’d like advice or support we suggest booking a call with an online vet.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the advice you need for your dog — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

 

What to Do About the Excess Shedding

Dog vacuum cleaner at the parquet floor vacuuming
Image Credit: Robert Kneschke, Shutterstock

Not much can be done to stop the excessive shedding until the reason for it is addressed. Still, there are a few things that you can do at home to make the excess shedding less inconvenient:

  • Vacuum your home more often. If you do it once a week now, try doing it twice a week. If you already vacuum daily now, there likely isn’t a need to do it more often.
  • Brush your pup outdoors, where their hair can get blown away by the wind and won’t end up in the carpets and corners of your home.
  • Make sure your dog always has access to fresh, clean water, as this will help keep the skin healthy and supple so it remains a great host for hair.
  • Ensure that your dog’s stress levels stay low through plenty of exercise, attention, a regular schedule, and proper nutrition.

divider dog paws 3 oct 2024

Conclusion

There is no data to show that dogs coming into their heat cycle shed more, though other factors may influence this, including parasites and other diseases. If you’re in doubt, reach out to your veterinarian for advice and treatment if necessary. Excessive shedding isn’t normal and is worth investigating further.


Featured Image Credit: MrClips, 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

The Crate Setup Most Dog Owners Get Wrong (And How To Fix It!)

Most people assume that if their dog hates the crate, the crate is the problem. So they try a bigger one, a different...

1,500 Beagles Rescued from Wisconsin Lab Farm – Here’s Where They’re Going

You may remember that a few weeks ago, we reported on a tense situation at Ridglan Farms, Wisconsin, a facility infamous for housing...

Dogster’s Weekly Photo Contest Winners: Window Watchers (May 11, 2026)

Every week our team gets the privilege of sorting through our readers photos to choose what dogs will win this weeks contest! See...

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...

More related

How to Groom a Rottweiler: 10 Expert Tips

Rottweilers are considered moderate shedders; they have a double coat and shed more heavily in the spring and fall, but it isn’t unmanageable,...

Why Does My Dog Drool in the Car? 4 Reasons for This Behavior

While most dogs look forward to riding in the car, some get sick when they do, to the point of drooling and vomiting....

German Shepherd Day 2026: What It Is & When It’s Celebrated

German Shepherds are a popular dog breed, with an estimated population size of over 10 million around the world. They have been a...

Living With a Blind Dog: 14 Vet-Approved Tips & How to Help Them Live Well

Few of us could imagine operating in the world without our eyesight, and it’s easy to worry when you notice your dog’s vision...

Keep reading

Purina Pro Plan Dog Food Review 2026: Pros & Cons and Recalls

Review Summary Purina has been one of the top producers in the pet food industry for over 90 years and has been a trusted brand for just as long. Since it has such a large variety of brands and recipes,...

Dogster_Purina Pro Plan Dog Food Review

7 Best Dog Foods for EPI German Shepherds in 2026: Reviews & Top Picks

Exocrine pancreatic insufficiency (EPI) is a disease that severely impacts the pancreas’ ability to produce digestive enzymes. EPI can be a problematic condition for your canine to deal with, and it can be difficult for you as the dog owner...

german shepherd resting on the grass

Can Dogs Eat Lettuce? Vet Approved Facts & FAQs

The good news is that, yes, dogs can eat lettuce. Iceberg lettuce, arugula, and romaine are all varieties of lettuce that your dog can eat. Although lettuce is okay for your dog to eat, it doesn’t provide much nutritional value...

Can Dogs Eat_lettuce

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 dessert and pairs well with fruit. If you enjoy eating chia seed pudding, you may be wondering...

two fruit with Chia Seed beverages on glass cups

Can Dogs Eat Anise Seed? Vet-Approved Benefits & Risks

Dogs can eat anise seed, and the strong-smelling spice is known to be the canine version of catnip. It can be used as a fun, stimulating treat for training or as a natural remedy. Before feeding anise seed to your...

Can Dogs Eat Anise Seed

Can You Put Bacon Grease on Dog Food? Vet-Approved Facts & FAQ

While your dog probably works up a pool of drool every time you start frying some bacon, do not add the grease from the pan to your dog’s food. Bacon grease is rich, fatty, and salty—all things that should be...

bacon grease in hot pan

What Is Turkey Meal in Dog Food? Vet-Verified Facts & Safety Info

You might be concerned about how safe turkey meal is and why pet food companies don’t just use more real turkey meat. Turkey meal and other meat meals are common ingredients found in dog food. Most dog food companies put...

labrador retriever dog eating its food from a bowl

10 Best Dry Dog Foods in Canada in 2026: Reviews & Top Picks

Feeding your dog is one of the top priorities for all dog owners, and finding the perfect dog food that will keep your pup happy and in good health is essential! But whether you’re looking to switch your dog’s food...

labrador dog eating food indoor

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