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4 Reasons Why You Should Treat Your Dog Against Fleas

4 reasons why you should treat against fleas


Did you know that fleas are the most common parasites found in dogs and cats? 

Veterinarians frequently raise awareness against them because they can harm your pet and family, and they are tough to exterminate!

When vets talk about fleas, we generally refer to Ctenocephalides felis, also known as Cat flea. But do not be fooled by its name because this is the main subspecies we find on cats and dogs. Interestingly enough, dogs have their flea called Ctenocephalides canis, the dog flea, but it is less common in dogs and never found in cats. 

When chatting with your veterinarian or your veterinarian team of professionals, you probably heard that you need to treat all your pets year-round for fleas. If they strongly recommend this approach, it's because of four main reasons you will want to know! 


  1. Fleas might bite you or your family

Insect bites are no fun, and itchy flea bites are no exception! More terrifying is that if you are the victim of a flea bite, they've taken over your living space.

Furthermore, you can be assured that your pet is suffering from flea bites! Indeed, adult fleas you can see represent only 5% of the total population of fleas present in your home. This bite will be the first of many.

More concerning than itchy bites are the diseases that flea can transmit to your pet and the rest of your family.

 Flea bite on a child

Fig. 1 - A child bitten by a flea

2. Fleas might give diseases to your family

We just eluded that Ctenocephalides felis, the common flea, can be host to parasites and bacterias. Fleas can be the vector of Bartonella henselae, the bacteria responsible for cat scratch disease. They can transmit this bacteria from one cat to another and directly to humans. Unfortunately, cats are primarily asymptomatic, so you won't know they have it. 

However, the cat-scratch disease can provoke symptoms like a fever in healthy people. This disease can affect the brain, eyes, and heart in children or people with poor immune systems and should be considered a serious condition. You can learn more on the Center for Disease Control and Prevention (CDC)website. The control of the flea population is one of the CDC's recommendations to limit cat scratch disease risks. 

Fleas can also transmit other bacterias that lead to diseases such as Rickettsias (R. typhi or R. felis). Once again, it might be called Ricketssia felis but a recent study has demonstrated that dogs are a natural reservoir for this bacteria. 

Even though they are mostly asymptomatic in cats and dogs, for humans, these diseases can lead to symptoms similar to those of cat scratch disease, including fever, headaches, and muscle pain (myalgia). In addition, they can go as far as to cause neurological complications.

Finally, they can transmit parasites to your pet. 


 3. Fleas might give worms 

You might have already seen small "rice grains" in your dog or cat's feces (see this not so sexy photo below) . These are not undigested rice but a specific tapeworm called Dipylidium caninum. You might be surprised to learn that this tapeworm is mainly transmitted to dogs and cats when they eat fleas.


Image of feces with tapeworms


Fig. 2 - Tapeworms (Dipylidium caninum) in cat feces

But don't be because flea bites are itchy. So, while licking their fur and skin, dogs and cats will inadvertently swallow fleas that might carry this Dipylidium. Once inside the pet's belly, the Dipylidium larva will grow, accomplish its reproductive cycle and release segments of its body in the feces: these are the rice grain-looking structures you can see.

When pets have Dipylidium caninum, you can spot them doing the famous "funny" symptom you might have seen on social media: the scooting and bottom dragging on the floor. If you see your pet doing that, you should take them immediately to the vet to get treated for tapeworm. (be careful, this symptom might have other causes, this is why you need to take your dog to the vets)


Tapeworms and fleas cycle diagram

4. Your pet might be allergic to fleas. 

When a flea bites a dog or a cat, it injects saliva that contains blood-thinning substances made of proteins. Some dogs and cats are more sensitive to flea saliva's proteins. In this case, even a single bite can lead to a severe allergic reaction called Flea Allergy Dermatitis (FAD). 

You will see your pet in so much agony that it will break your heart. Indeed allergic animals will scratch, lick and chew intensively the itchy and inflamed areas making their skin red, swollen, and hairless. 

Learn more about this condition in our dedicated article: Everything you should know about Flea Allergy Dermatitis (FAD) in dogs and cats. 

We hope you now agree that it's essential to treat all your pets year-round to avoid running into these four very unpleasant situations! 


Author: Dr. Jeremy

Doctor of Veterinary Medicine (DVM), MS

Meet Jeremy, a passionate veterinarian and co-founder of Jope, with a decade of experience—7 years in the nutraceutical and pharmaceutical industry and 3 years as a veterinarian. Passionate about enhancing the well-being of pets, Jeremy's mission is to provide practical, evidence-based advice and products that support pet parents and their furry companions. His favorite breed, the Australian Shepherd, holds a special place in his heart for their playfulness, cleverness, and beauty.

Join Jeremy on an insightful journey through the world of pet health and discover how science and compassion come together to improve the lives of pets.

The content presented here is for informational purposes and reflects Jeremy's own opinions, expertise, and experience. It is not intended to replace professional veterinary consultation, diagnosis, or treatment. For personalized advice and care for your pets, always consult with your veterinarian.

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