What are fleas and how do dogs get infested?

Fleas are small, wingless insects that feed on the blood of animals, including dogs. They can cause discomfort and irritation to dogs and other animals, and can also transmit diseases. Dogs can become infested with fleas in a number of ways, including contact with other infested animals, exposure to infested environments, and even contact with humans who have brought fleas into the home.

Why do dogs itch when infested with fleas?

Dogs itch when infested with fleas because the fleas bite and feed on their blood. The saliva of the fleas contains proteins that can cause an allergic reaction in some dogs, leading to intense itching and scratching. This can lead to a variety of skin problems, including hot spots, infections, and hair loss.

How long does it take for flea bites to appear?

Flea bites typically appear within hours of a dog being infested with fleas. However, some dogs may not show any signs of flea bites for several days or even weeks. This can make it difficult to determine if a dog has a flea infestation, especially if the infestation is mild. It is important to regularly check dogs for fleas and flea dirt, which is a sign of flea activity.