Fleas are quite resilient pests, but their survival in cold weather is limited. Generally, fleas thrive in warm, humid environments. When temperatures drop below 32°F (0°C), adult fleas can become inactive, and their eggs and larvae may not survive. However, if they find shelter inside a warm home, they can survive and reproduce. It's essential to treat your dog and your home for fleas, especially in the colder months, to prevent infestations. Regularly vacuuming and washing your dog's bedding can help eliminate any hidden fleas and their eggs.

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Topics covered in this question:

Dog Health Dog Care Fleas Pest Control Winter