Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Will Fleas Kill a Kitten? Facts & Safety Guide

kitten wearing green flea collar

Pet owners know fleas are an itchy nuisance, but the parasites can cause even bigger issues for some animals, such as kittens. Fleas bite to feed, and their food is your pet’s blood. A heavy flea infestation could result in dangerous blood loss and kill a kitten, especially a newborn kitten.

In this article, we’ll cover the dangers of fleas and signs that your kitten could be at risk. We’ll also let you know how to treat and prevent fleas. Getting advice from your vet will be crucial, particularly considering your kitten’s age and size, since not all products will be suitable for your feline baby.

divider 3 paws

How Fleas Could Kill a Kitten

As we mentioned, fleas bite to feed on your pet’s blood. Healthy, full-grown pets can usually cope with blood loss without physical effects because they can make more red blood cells to replace those that the fleas drink. However, kittens are a different story. Kittens are tiny and immature, and their bodies can’t make up for the blood loss as well as adults’ can.

Kittens already have a smaller volume of blood in their bodies and may be unable to make more red blood cells fast enough to replace what the fleas remove. Cats typically remove fleas from their bodies by grooming, but kittens aren’t as capable of doing that effectively.

Anemia, or a lack of red blood cells, can occur for many reasons. Flea anemia occurs when the insects suck enough blood volume out of an animal to cause a problem.1 Red blood cells are responsible for carrying oxygen and other nutrients throughout the body, which is why it can be life-threatening not to have enough of them.

While anemia is the most critical threat that fleas pose to your kitten, the bloodsucking insects can also carry dangerous infectious diseases and internal parasites like tapeworms. In the long term, these conditions could also be life-threatening for your kitten.

a kitten lying on the floor
Image Credit by: Garmasheva Natalia, Shutterstock

Signs of Flea Anemia

You’ll often see live fleas crawling on the bodies of kittens that have not grown full coats. You may also see the kitten scratching or find flea dirt (dark specks) on their skin and bedding. If the fleas are causing anemia, some of the most common signs you’ll notice include:

  • White or pale gums
  • Lack of energy or listlessness
  • Trouble breathing
  • Cold to the touch

If you notice any of these signs, your kitten needs medical attention fast. Treating flea anemia requires removing the parasites (which can be harder than it sounds if the kitten is young and very sick), providing supportive care, and often hospitalization and blood transfusions.

Kitten Vaccine
Image Credit: Maria Sbytova, Shutterestock

Treating & Preventing Fleas in Kittens

The best way to keep your kitten safe from life-threatening flea complications is to prevent or quickly treat a parasite infestation. Although many effective flea prevention products are on the market, most are not safe for kittens under 8–12 weeks old or under 2 pounds. Never use flea products on your kitten without checking with your veterinarian first.

If you have other pets in the house, ensure they receive regular flea prevention. Treat your kitten’s home environment for fleas. The live adult fleas you see are only part of the problem with any flea infestation. Unless you remove the flea eggs and immature fleas that live in the environment, your kitten will keep getting reinfested.

Your vet or a pest control specialist can help you decide on a safe and effective way to treat fleas in your house and yard. Typically, you’ll need to wash your kitten’s bedding frequently in hot water, vacuum often, and use some form of a flea-killing product.

Speak to your vet about the most suitable flea treatment for your kitten. There are different options, and dealing with the problem quickly will reduce the chances of your cat getting a heavy infestation. Use a flea comb on your kitten to remove even more of the insects. Use a flea comb on your kitten to remove even more of the insects.

Never use a flea product labeled for dogs on your kitten (or cat), and don’t use essential oils or other “natural” flea control methods without checking with a vet first.

If you’re unsure about the right method or medication for treating your cat, you should consult your vet, especially if your pet has an underlying health condition.

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 advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider single cat paw oct 2024

Conclusion

Healthy adult cats can usually make enough red blood cells to replace those sucked out by fleas and rarely suffer life-threatening complications. However, too many fleas can quickly kill a kitten, and taking their presence seriously is important. Quickly treating the fleas on the kitten and in your home is essential to prevent an itchy situation from becoming more critical.


Featured Image Credit: Fayzulin Serg, Shutterstock

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster 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

Persian Kittens for Sale in Louisiana: Breeders List 2025

Excited Cats advocates for adopting before shopping, though we fully understand there are many reasons for seeking a breeder. So, we encourage it...

What Is Cat Massage Therapy? Our Vet Explains the Indication, Types, & FAQ

If you’ve ever received a therapeutic massage, you know how effective it can be against severe muscle aches, muscle pain, tension, and tightness....

Is Your Cat a Loud Groomer? Olga Certainly Is!

Hi, I’m Christopher! Read my introduction to learn more about me and my silly Russian Blue cat, Olga. First-time owners are often surprised...

16 Herbs for Cats That Improve Health & Are Feline Friendly (Vet Answer)

Long before humans domesticated cats, they survived in the wild where many different plants and herbs would grow. These days we feed our...

More related

Do Cats Poop Less on Wet Food? 3 Ways to Get Your Cat to Poop Less

Our precious felines are ever so kind to leave us love bombs in the litter box on a regular basis. No matter how...

PrettyLitter Cat Litter Review of 2025: Vet-Reviewed Characteristics, Pros & Cons

Review Summary PrettyLitter is renowned for its ability to catch health problems early. It changes colors based on your cat’s urine pH, allowing...

5 Homemade Dry Cat Food Recipes

When it comes to sorting through the brands and styles of cat food on the market, you might be a bit confused about...

5 Side Effects of Microchipping Your Cat – What You Should Know! Vet-Approved Info

These days, microchipping pets is commonplace and beneficial for you and your pet for many reasons. One of the risks of owning pets...

Keep reading

British Shorthair Cat Health Problems: 7 Vet-Reviewed Health Issues

Getting a new cat is always an exciting time! Part of the fun of adopting a pet is figuring out which breed will be the best fit for you and your family—that means doing some research. You’ll need to learn...

Catster_Health Problems of British Shorthair

Is Alstroemeria Toxic to Cats? Vet-Approved Advice

If your cat just ate some of your Peruvian Lily or rubbed on the petals you may be panicking. Although The ASPCA lists Peruvian Lily, also known as Alstroemeria, as safe for cats, dogs, and even horses, it is listed...

Catster_Is Alstroemeria Toxic to Cats

Nutro Cat Food Review of 2025: Recalls, Pros & Cons

Nutro Cat Food Review Summary Founded in the 1920s, Nutro is an American pet food manufacturing company and a subsidiary of Mars Inc., which also manufactures other pet food brands, including Whiskas, Royal Canin, and Iams, and is now headquartered...

Nutro Cat Food Review

Can Cats Eat Peaches? Vet-Reviewed Facts & Precautions

Peaches are among the sweetest and most delicious natural treats there are. Since cats are so curious by nature, you may notice your feline coming over for a sniff, showing interest in the peaches you’re snacking on. If you’re like...

Can Cats Eat Peaches

How Does a Cat Purr? The Evolution & Meaning Behind a Purr (Vet Reviewed)

Cats are known for their adorable vocalizations, and their purring is usually a sign of contentment and happiness. But have you ever wondered how your cat makes that calming vibration? Cats purr by vibrating their laryngeal muscles through several mechanisms....

cat purring

Love, Nala Cat Food Review 2025: A Detailed Look

If you’re like me (and so many other obsessive cat owners) and spend too much time on Instagram stalking adorable kitties, then you probably already know who Nala Cat is. She does, after all, hold the Guinness Book of World...

Love Nala Cat Food

Why Is My Kitten So Aggressive? 6 Likely Reasons & Vet-Approved Tips

It’s not uncommon for new cat owners to be surprised by their kitten’s aggressive behavior. Kittens are wild creatures still learning about the world, and they’re unaware that their pouncing and bouncing can inflict pain. While it might seem cute...

two kittens playing

Why Does My Cat Need Mental Stimulation? 7 Vet-Approved Reasons

Cats are quite curious and inquisitive by nature, so they require a significant amount of mental stimulation to satiate their curiosity and keep them happy. Along with keeping them engaged, mental stimulation can also boost a cat’s mood, increase their...

two cats playing with toy at home