Flea Life Cycles: Why the ‘Winter Gap’ Ends in March

March 14, 2026

Many pet owners relax on flea treatments during the winter months, assuming the colder weather keeps these pests at bay. While it’s true that adult fleas are less active in chilly conditions, the hidden stages of the flea life cycle can quietly survive in your home, and March is when they start to make their presence known in Northamptonshire.

Read Northlands Cat & Rabbit Care Clinic’s guide to flea cycles and don’t get caught out by a spring flea surge. Book a parasite review to ensure your home and loved ones stay protected as the weather shifts.

Book a parasite review now

 

Understanding flea life cycles this spring

Northlands Cat & Rabbit Care Clinic’s team explain that fleas go through four stages: egg, larva, pupa and adult.

The pupae are particularly hardy, able to remain dormant in carpets, skirting boards, floorboard cracks, bedding and upholstery for several months. Flea larvae hate light and crawl deep into dark crevices, which is why just washing the bedding often isn’t enough to stop a spring surge.

Even if your pet hasn’t shown signs of fleas during the winter, these pupae are waiting for the right conditions – warmth, movement and humidity – to emerge. As the days lengthen and spring approaches, these dormant fleas hatch, often all at once, leading to sudden infestations that can catch families by surprise.

Once fleas are active, they can quickly reproduce on your pets, causing itching, irritation, and in some cases, allergic reactions or secondary skin infections. Fleas also pose a risk of transmitting tapeworms and other parasites, and in rabbits, increase the risk of spreading serious diseases like Myxomatosis. This makes early prevention and vigilance vital, even as the weather just starts to warm. 

Protecting your pets and home

To stay ahead of a spring flea surge, our vets in Northampton advise maintaining regular, species-specific flea preventatives on cats and rabbits, ideally all year round. Check bedding, carpets and soft furnishings for signs of fleas and clean regularly. Flea combs are useful for spotting adult fleas early, and prompt treatment of your pets helps prevent the problem from escalating.

Our team at Northlands Cat & Rabbit Care Clinic can recommend the right preventatives, show you how to spot early signs, and provide advice tailored to your pet’s species and lifestyle. It is vital to remember that rabbit-safe flea treatments are different from those used for cats. Then you can reorder your cat flea medication via our website going forward.

Book a parasite review with us — early action now can save both you and your pets a lot of irritation later, keeping your home in Northamptonshire flea-free and your furry friends comfortable as spring arrives.

Book a parasite review now

 

Strictly Necessary

These cookies are required for our website to operate and include items such as whether or not to display this pop-up box or your session when logging in to the website. These cookies cannot be disabled.

Performance

We use 3rd party services such as Google Analytics to measure the performance of our website. This helps us tailor the site content to our visitors needs.

Functional

From time to time, we may use cookies to store key pieces of information to make our site easier for you to use. Examples of this are remebering selected form options to speed up future uses of them. These cookies are not necessary for the site to work, but may enhance the browsing experience.

Targeting

We may use advertising services that include tracking beacons to allow us to target our visitors with specific adverts on other platforms such as search or social media. These cookies are not required but may improve the services we offer and promote.

Change Settings

Welcome. You can control how we use cookies and 3rd party services below

Change Settings Accept