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.

How Do Dogs Get Fleas? 5 Ways & Vet-Approved Prevention Tips

shiba inu dog scratches its ear

Seeing your dog habitually scratch themselves might make you suspect they have fleas and upon closer inspection, you might notice the small, dark parasites crawling in your dogs’ fur. It is quite common for dogs to get fleas, which is why many dog owners will regularly treat their dogs during the warmer months.

However, fleas can still be a problem for dogs year-round. Regardless of how clean the environment is and how strict your dog’s hygiene routine is, they can still catch fleas, and this article will explain how. In short, dogs get fleas from other pets, wildlife, grasses, and even you!

What Do Fleas Look Like?

Fleas are sometimes confused with ticks on a dog, although these parasites have different appearances and behaviors. Fleas are small, adult fleas are only about 1/8th of an inch long. They are a dark reddish-brown color and can move and jump with speed. The fleas backward-facing spines allow them to securely attach themselves to your dog’s fur, so even a normal bath and frequent brushing won’t get rid of them easily.

Sometimes the fleas themselves won’t be obvious but you will see evidence of ‘flea dirt’ instead. Flea dirt is flea feces produced after fleas have had a blood meal from your dog and look like little specks of brown dirt. If you collect some of this dirt and place it on a moist white tissue it will stain the tissue red, which can help you tell the difference between flea dirt and ordinary dirt that your dog may have gotten on their fur.

One of the first behaviors you may notice in a dog that has fleas is that they become itchy. Once the flea starts biting your dog, your dog’s response will be to scratch and shake to get rid of the uncomfortable itchy feeling. This itchy reaction can become more severe in dogs with flea saliva allergies.

Furthermore, a dog who is constantly scratching at its skin because of fleas is putting itself at risk of developing skin infections from damaged skin. This makes it important to carefully inspect your dog’s fur if you notice them scratching more than usual or see specs moving around in their fur.

flea allergy dermatitis on dog
Image Credit: February_Love, Shutterstock

The 5 Ways Dogs Can Get Fleas

When people think of a dog with fleas, we generally assume it to be an uncared-for street dog without regular grooming. However, any dog is susceptible to picking up fleas, regardless of how clean and well-maintained their coat is.

Let’s discuss the five ways that dogs can get fleas below:

1. From Other Pets

Dogs don’t only get fleas because of other dogs that can transfer fleas to them, but also from other pets like cats and rabbits. The most common flea found on dogs is actually the cat flea—Ctenocephalides felis. This is because fleas are capable of jumping from one pet to the other and also because your dog can be infested by newly emerged fleas in the home.

So, if you notice that one of your pets has fleas, it is important to treat all in-contact pets with a veterinary-approved product appropriate for that species. Note—some dog flea products can be highly toxic to cats. It is also important to treat the environment. Always seek advice from your vet about the right products to use.

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 pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1


2. Wildlife

Wild animals like opossums, raccoons, and rodents can carry fleas into your dog’s environment. Dogs can pick up fleas directly if they interact with any wild animals or again from newly emerged fleas in the environment.


3. Grass and Sandy Areas

If you live in an area that has a lot of sand and vegetation, your dog might be more likely to pick up fleas. Immature fleas can often be found in grass and other areas that can hop onto your dog as they go past. This will be more common during the warmer summer and spring months rather than wintertime, although it can be a problem year-round.

Young sable shiba inu dog stands on the grass
Image Credit: Elena Shvetsova, Shutterstock

4. You or Other Visitors

While we don’t want to be the cause of our dogs’ fleas, occasionally we unintentionally transfer fleas or their eggs to our dogs and their environment. This can happen if you have fleas attached to your socks or clothing which can then come into contact with your dog.

This is more common if you are camping or live next to a vegetation-rich area where fleas can attach themselves to your clothes as you are walking through it. Any visitors that come over or you take your dog to visit may have a pet that might transfer fleas to your dog.


5. Traveling

If you take your dog camping or traveling to new areas, they are likely going to pick up fleas from both the wildlife and the environment. Whenever you take your dog camping or travel with them to places where other animals are, it’s a good idea to use flea-preventative methods to lower your dog’s risk of catching fleas.

Jack Russell Terrier resting in nature in summer. Hunting dog on a walk in a hike
Image Credit: Victoria Smolina, Shutterstock

How Do You Prevent a Dog From Getting Fleas?

Dealing with a dog who has a flea infestation can be unpleasant, but fortunately, there are several safe and effective ways to prevent your dog from getting them. First, if your other pets such as cats regularly venture outdoors, it is best to regularly treat them for fleas. Even if your dog spends most of their time indoors, an outdoor cat that comes in and out can put them at risk of picking up fleas.

Flea preventatives like topical spot-ons, tablets, and flea collars are available. You should speak to your dog’s veterinarian about the best way to prevent fleas on your dog and other pets.

Woman wearing a collar for dog, kill and repel tick and flea
Image Credit: Chutima Chaochaiya, Shutterstock

Conclusion

There are many ways that a dog can pick up fleas, usually from fleas in the environment ( indoors and outdoors) or contact with other infested animals. Fleas can be quite stubborn, so brushing or bathing your dog with a normal shampoo isn’t going to do much to prevent or treat any flea infestations.

If you are worried about your dog catching fleas, you should speak with your veterinarian about the right flea preventatives you can use for your dog depending on their health and lifestyle.

See also: 


Featured Image Credit: MitchyPQ, 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

German Pinscher vs Doberman: The Differences (With Pictures)

If you’re unfamiliar with German Pinschers and Dobermans, it can be pretty tricky telling the difference between the two. Both breeds originated in...

How to Shave a Dog With Matted Hair: 8 Vet-Approved Steps & Prevention Tips

A shaved dog is probably not the style you’d prefer aesthetically. However, for dogs with severely matted fur, sometimes cutting their hair down...

National Poodle Day 2026: When It Is & How You Can Celebrate

Whether they’re a toy, miniature, or standard Poodle, there are very few pet owners, or even non-pet owners, who don’t know how gorgeous,...

10 Best Dog Harnesses for Walking in 2026 – Reviews & Top Picks

When it comes to dog walking, many people prefer harnesses to collars. Some dogs will choke themselves on a collar, while others do...

More related

Will a Border Collie Be Good With My Cat? Facts & FAQ

If you have a beloved cat at home and are considering adding a dog to your family, you may wonder if Border Collies...

Vizsla German Shepherd Mix: Info, Pictures, Care Guide & Temperament

The Vizsla German Shepherd Mix is a unique and captivating hybrid dog breed that combines the best traits of the Vizsla and German...

14 India Pet Ownership Statistics to Know in 2026

Note: This article’s statistics come from third-party sources and do not represent the opinions of this website. For many years animals have had...

Can Dogs Be Schizophrenic? Vet-Verified Mental Health Facts

Maybe your dog’s personality has suddenly done a 180. The sweet pup you cuddled with on the couch acts aggressive and perhaps growls...

Keep reading

Can Dogs Eat Seedless Grapes? Vet-Approved Health & Safety Facts

When you want to treat yourself to a sweet treat, you don’t usually have to think about whether food from the grocery store will make you sick. However, it’s a completely different matter when shopping for healthy and tasty treats...

Can Dogs Eat Seedless Grapes

Can Dogs Eat Mexican Rice? Vet-Verified Facts & Tips

It’s not unusual for people to search for ideas on new things for their dogs to eat. Pet owners want their dogs to enjoy new things from time to time instead of routine dog food. Considering that rice is often...

Can Dogs Eat Mexican Rice

Can Dogs Eat Croissants? Vet-Verified Nutrition Facts & Alternatives

Although croissants don’t contain ingredients that are toxic to dogs, it’s still not recommended for dogs to eat them. So, you don’t have to worry too much if your dog sneaks a bite of a croissant, but this pastry shouldn’t...

Can Dogs Eat_croissants

Merrick Dog Food Review 2026: Recalls, Pros & Cons

Review Summary Garth Merrick founded Merrick Pet Care in 1988 out of a desire to create homemade food for his dog, Gracie. He crafted his recipes in Hereford, Texas, where the company still has offices. Merrick prides itself on producing...

Dogster_Merrick Dog Food Review

Super Chewer by BARK Review 2026: An Expert’s Breakdown

Review Summary Introduction If you and your pup like surprises, a Super Chewer subscription from the makers of BarkBox won’t disappoint. This package is filled with toys and snacks that are designed for dogs who vigorously enjoy their gifts, as...

DOG_SAPR_Bark Super Chewer Dog Subscription Box

Can Dogs Eat Salsa? Vet Approved Facts & FAQs

Salsa is a spicy relish composed of tomatoes, peppers, herbs, limes, onions, and spices. It’s usually paired with tortilla chips as an appetizer, but it can also be used as a topping or filling for tacos, enchiladas, or burritos. Salsa...

Can Dogs Eat Salsa

Tired of Traditional Kibble? Why Spot & Tango Is a Healthier Option

If you’ve ever caught your dog sniffing their bowl with mild interest before walking away, you’re not alone. For many pet parents, traditional kibble just isn’t cutting it anymore. We’re asking tougher questions: What exactly is in this bag of...

Spot & Tango Lifestyle 2_Doodle

7 Best Low-Fat Dog Foods in 2026 – Reviews & Top Picks

Getting an overweight dog to shed some pounds can be challenging, but it’s the best thing for them. Obesity can lead to other health issues, like high blood pressure, heart disease, and diabetes. As much as we love our pups...

Ginger dog eating