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

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

12 Best Moist Dog Foods in 2026 – Reviews & Top Picks

Becoming a dog parent comes with a lot of responsibility, and one of the top priorities is your dog’s diet. Naturally, we want...

How Strong Is a Pit Bull’s Bite Force? PSI Measurements & Facts (Vet Answer)

The Pit Bull’s impressive build is intimidating, and they make the headlines often when it comes to “dangerous dogs.” However, they are not...

Is Food Coloring Safe for Dogs? Health Facts & FAQ

Food coloring, or color additive, is any dye, pigment, or substance that imparts color when it is added to food or drink. Food...

French Bulldog Breed: Info, Pictures, Temperament & Traits

French Bulldogs (affectionately nicknamed “Frenchies”) are beloved companion dogs with massive bat ears, a playful personality, and the adaptability to live anywhere from...

More related

Irish Wolfhound vs Great Dane: Key Differences (With Pictures)

The Irish Wolfhound and the Great Dane are two of the largest dog breeds in the world. These dogs can grow to massive...

12 Facts About the Chinese Shar-Pei Dog Breed (Vet-Verified)

Chinese Shar-Pei have a hippo-like face, small eyes, and an oversized coat, but these are just a few features that make this breed...

Do Foxes Attack and Eat Dogs? How to Avoid Danger in Your Backyard

Foxes are rather common creatures, found in both rural settings and more populated areas like towns and even major cities. They’re wily creatures...

9 DIY Indestructible Dog Toys for Dogs That Chew (With Instructions & Pictures)

Dogs that are compulsive chewers love toys that they can munch on until their little heart’s content. However, did you know that you...

Keep reading

Can Dogs Eat Pomegranates? Vet-Verified Nutrition Facts & Info

Pomegranate is widely billed as being a superfood for humans, thanks to the diverse range of vitamins and minerals it contains, and the concentration of them. They are particularly known for being high in fiber and potassium as well as...

Dogster-Can-Dogs-Eat-Pomegranates

Do Puppies Need Puppy Food? Vet-Verified Facts & FAQ

When you stop to really think about it, it may seem like a no-brainer that puppies would need different food from our adult dogs. After all, we feed infants baby food. However, it really isn’t that clear to a lot...

dry dog food in a bowl on wooden table

10 Best Bowls for Puppies in 2026 – Reviews & Top Picks

Puppies haven’t necessarily learned the same feeding etiquette as some adult dogs. They can be inclined to wolf their food down and spread debris all over the floor. They transfer food to the water bowl, and vice versa, and give...

Great Dane Puppy Eating

11 Best Dog Foods for Goldendoodles in 2026 – Reviews & Top Picks

With so many dog food choices out there, it can be hard to figure out if what you’re using is what’s best for your pup. That’s why we tracked down the ten best dog foods for your Goldendoodle and highlighted...

english goldendoodle puppy

Can Dogs Eat Vegetable Oil? Vet-Verified Facts & FAQ

Vegetable oil is used in cooking and found in a variety of products, which may have you wondering if it’s safe for your dog. After all, it’s easy to accidentally give your dog something with vegetable oil without realizing it....

can dogs eat vegetable oil featured graphic Dogster

11 Best Dog Foods for Huskies to Gain Weight in 2026: Reviews & Top Picks

It can be stressful to have a dog that is underweight, and Huskies are a breed that are particularly prone to this because of their high activity level. It can also be difficult to determine your Husky’s body composition due...

young siberian husky eating

10 Best Chicken & Rice Dog Foods in 2026 – Reviews & Top Picks

Chicken and rice recipes are among the most popular and common dog food formulas. Virtually every brand and formula offers a chicken and rice recipe, and for good reason! Chicken is a lean, healthy, complete protein that’s affordable and highly...

cream dog eating from the bowl

Can You Mix Wet and Dry Dog Food? Vet-Verified Pros & Cons

Do you ever mix wet and dry dog food together? Many people do, but is it a good idea? Some pet owners believe that mixing the two will provide their canine companions with a more well-rounded diet. However, others think...

Wet and dry pet food made of natural ingredients