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  • Writer's pictureElissa Bazley

The Autumn Itch: Why do Dogs Get Fleas in the Autumn?

As the leaves start to change colour and the air becomes crisp and cool, many dog owners may assume that the risk of flea infestations is on the decline. After all, summer is often associated with fleas and ticks due to the warm weather, so it's reasonable to think that autumn would bring some relief. However, the reality is quite different. Dogs can still get fleas in the autumn, and in this blog, we'll explore why this happens and how you can protect your furry friend during this season.

Understanding Fleas

Before delving into why dogs can get fleas in the autumn, it's essential to have a basic understanding of these pesky parasites. Fleas are small, wingless insects that feed on the blood of animals, including dogs. They are notorious for causing itching, discomfort, and a range of health issues in pets. Flea infestations can be challenging to eradicate once they take hold, making prevention vital.

Why Fleas Thrive in Autumn

1. Temperature and Humidity: Contrary to popular belief, fleas don't disappear when summer ends. Fleas are resilient and can adapt to changing weather conditions. In some regions, autumn may still offer warm and humid days, which are ideal conditions for fleas to thrive. As long as the temperature stays above freezing, fleas can continue to reproduce.

2. Life Cycle: Fleas have a life cycle that consists of four stages: egg, larva, pupa, and adult. During the autumn, the warm and moist conditions can accelerate the development of flea eggs and larvae, allowing them to mature into adult fleas more quickly. This means that even if your dog didn't have a flea problem in the summer, there may be a sudden surge of fleas in the autumn.

3. Wildlife Activity: Autumn is a season of increased wildlife activity. Many wild animals, such as squirrels, hedgehogs, and deer, can carry fleas. When these animals pass through your garden or come into close proximity to your dog, they can leave behind fleas, which can then infest your pet.

4. Indoor Heating: As the weather cools down, people often turn on their heating systems indoors. The warm and dry environment created by indoor heating can be attractive to fleas, encouraging their activity throughout the autumn and winter.

Protecting Your Dog in Autumn

1. Flea Prevention: Continue using flea prevention products recommended by your vet throughout the autumn months. These can include topical treatments, oral medications, or flea collars. Regular use of these products is key to keeping your dog flea-free. There are, of course, natural alternatives available to do investigate your options.

2. Regular Grooming: Regular grooming sessions can help you detect fleas or their telltale signs early. Use a flea comb to check your dog's fur, especially in areas where fleas tend to hide, such as behind the ears and around the tail.

3. Garden Maintenance: Keep your garden clean and well-maintained. Remove debris, leaf piles, and tall grass, which can serve as hiding spots for fleas and their eggs.

4. Wildlife Deterrence: Take steps to deter wildlife from entering your property. Secure rubbish bins, eliminate food sources, and consider installing fencing or barriers to prevent wild animals from coming into contact with your dog.


While autumn may bring cooler weather and falling leaves, it doesn't mean that the risk of fleas disappears for your dog. Fleas are resilient parasites that can thrive in various environmental conditions. It's essential to remain vigilant and continue flea prevention measures throughout the autumn to ensure your furry friend stays itch-free and healthy. By understanding why dogs can get fleas in the autumn and taking proactive steps to protect your pet, you can enjoy the season without the worry of fleas.

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