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 Fleas Cause Anemia in Dogs? Vet-Reviewed Signs & Prevention

dalmatian dog looking sick

When your dog has fleas, it is a complete nuisance for both it and you. These tiny things cause immense discomfort and itchiness (sometimes for you as well as your pup!) and can quickly get out of control and infest your home from top to bottom. But as annoying as fleas can be, there’s not much they do to your pet other than make it scratch like crazy, right?

Wrong! A good majority of the time, fleas will only be itchy and frustrating for your household, but they can actually also harm your dog. In fact, for some pups, flea infestations may lead to developing anemia. How do they do that, and how will you know if it is happened to your favorite canine? Keep reading to find out!

divider single dog paw oct 2024

What Is Flea Anemia in Canines?

You’re probably familiar with anemia, as it is an issue that affects people, not just animals. Anemia happens when a canine’s body does not have enough red blood cells. These cells carry oxygen to the muscles and tissue, so they’re essential. But how do fleas relate?

Well, fleas suck blood. So, if your dog gets covered in fleas that aren’t being treated, that’s a lot of blood being lost. Too many fleas can rapidly decrease a dog’s blood supply and red blood cells.

The result? Your pet gets weaker and more fatigued until, eventually, it can no longer stand. Flea anemia can be fatal, particularly in puppies, as they have tiny bodies with less blood volume and don’t have fully developed immune systems, so you want to avoid it at all costs!

a dachshund dog looks sick lying on its owner
Image Credit: Leka Sergeeva, Shutterstock

Signs of Flea Anemia in Dogs

How will you know if your dog is suffering from flea anemia? 

This is box title
  • Weakness
  • Fatigue
  • Pale gums
  • Bruising of the skin
  • Less tolerance for exercise and activity
  • Loss of appetite
  • Rapid, shallow panting

divider dog paws oct 2024

How Is Flea Anemia Treated?

How flea anemia is treated depends on how bad the situation has gotten. In the worst-case scenario, your dog will require a blood transfusion. However, if the anemia is less dire, your vet may treat your pet with a combination of options, including:

  • Medication
  • Intravenous fluids
  • Supplements
  • Flea control

If you see any signs of flea anemia in your dog, you’ll want to get it to the vet immediately before things become worse. But treating the anemia won’t just happen at the vet; you’ll have to do serious cleaning of your home to get rid of all the fleas so the situation with your pup doesn’t repeat itself.

sick dog examine by vet
Image by: IgorAleks, Shutterstock

Flea Prevention and Treatments

The simplest and best way to avoid flea anemia from happening in the first place is to prevent fleas from getting on your pup (or controlling them if they already have them). There are several ways to prevent or treat fleas these days, both for your dog and your home.

You can:

As your vet will recommend, the best way to prevent fleas from hopping onto your dog is to use flea medication, whether topical or given via oral route. There are many of these available, so be sure to talk with your vet about which one is right for your pup!

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

PangoVet_Mention-in-Content Savings V1

divider dog paws 3 oct 2024

Summing Up

Fleas aren’t just an annoyance; they can be downright deadly to your dog. When fleas overrun your pup, you run the risk of your pet becoming anemic (particularly if your pet is a puppy, older, or has an underlying medical issue). If your pup develops anemia because of fleas, you need to get it to the vet as soon as possible for treatment. Waiting too long to take care of the problem can be fatal! However, the best way to prevent flea anemia is to prevent fleas with flea medication (or by treating them the moment you notice they are there).


Featured Image Credit: Alexander Hagseth, 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

9 Best Dog Toothbrushes in 2025 – Reviews & Top Picks

Just like humans, proper dental hygiene is essential for your pooch to avoid tooth decay and bad breath. A lot of pet parents...

Cocker-Pei (Shar-Pei and Cocker Spaniel Mix): Info, Pictures, Care & More

If you’re searching for the perfect canine companion with the cutest wrinkled face and friendly nature, the Cocker-Pei is the perfect pet for...

Is Dawn Dish Soap Safe for Dogs? Vet-Verified Facts & FAQ

Whether romping in the mud or rolling in the smelliest item that they can find, dogs always seem to find a way to...

American White Shepherd Dog Breed: Info, Pictures, Care Guide & Traits

The American White Shepherd is perhaps one of the most beautiful canines to ever exist. Dog fanciers consider them exquisite pups, incredible companions,...

More related

Parti Goldendoodle: Info, Pictures, History & Origin

Golden Retrievers and Poodles are among the most popular dog breeds. So, if you can’t decide which doggo to adopt, you can always...

Whole Earth Farms Dog Food Review 2025: Recalls, Pros & Cons

Review Summary If you’re a pet parent, then you’ve probably already heard of Whole Earth Farms dog food just because of their tagline,...

12 Best Gourmet Dog Foods in 2025 – Top Picks & Reviews

We all want what is best for our canines, and premium food can be just the way to ensure that happens. Gourmet dog...

Doberman vs Belgian Malinois: The Differences (With Pictures)

When considering a dog that will protect you, your family, and your home, there are several options. Two of the most popular are...

Keep reading

8 Best Just Food For Dogs Alternatives in 2025: Reviews & Top Picks (Vet-Reviewed)

Fresh dog food delivery services have crashed into the pet industry like a tidal wave, and with good reason. If you are a pet owner, odds are that you have contemplated feeding your beloved pets these human-grade foods; perhaps you...

Dog eating Nom Nom Fresh Dog Food

8 Best Dog Foods With Grain in 2025 – Reviews & Top Picks

Many modern pet owners are opting for grain-free dog food because, not only has grain-free dog food become a trend as of late, but owners fear that ordinary grain might cause weight gain. They also say that these grains are...

labrador retriever eating dog food

Ollie vs Spot & Tango 2025 Comparison: Which Fresh Dog Food is Better?

If you look at the pet food aisle, you’ll find a dizzying array of choices, from dry food to canned to pouches to frozen meals. We understand why it can be so confusing to find the best one for your...

Dogster_Dog Food Ollie VS Spot & Tango

Can Dogs Eat Meatloaf? Vet-Verified Facts & Healthy Diet Tips

Meatloaf is a household staple in the United States. You can prepare this ground meat mixture in several ways that are delicious and satisfying. It’s loaded with protein, easy to make, and smells heavenly when you pull it from the...

Can Dogs Eat Meatloaf

10 Best Non-GMO Dog Foods in 2025: Reviews & Top Picks

There are so many different types of dog foods on the market. From “grain-free” to “holistic” to “human-grade,” how do you choose the best one for your canine pal? Many marketing terms are used on dog food labels nowadays, and...

Gizmo white fluffy dog with Ollie dog food box

Can Dogs Eat Gummy Worms? Vet-Verified Nutrition Facts & Alternatives

We take our dogs with us wherever we go, spoil them on holidays, and consider them part of our family. So, it makes sense if you’d like to share your favorite activities and snacks with them, too. But what if...

Dogster-Can-Dogs-Eat-Gummy Worms

What To Add to Dog Food for Dry Skin: 9 Great Ideas

As dog owners, we understand the frustration of a pet that scratches and licks excessively, but it is much more agonizing for the dog. If you checked for fleas and there are none, your canine friend likely has dry, itchy...

woman feeding dalmatian dog

11 Best Foods for Pit Bull Puppies in 2025 – Reviews & Top Picks

If you’ve just brought home your adorable Pit Bull puppy, you may be wondering if you should get breed-specific food. Though all dog food must adhere to standards set forth by the Association of American Feed Control Officials (AAFCO), some...

pitbull boxer mix puppy sitting and looking up at camera