The main reason why dogs get fleas is because they have fleas on their bodies. Fleas are small, shelled animals that live on your dog's skin for long periods of time and suck blood from your dog's body. Dogs often become infested with fleas because they come into contact with other dogs, allowing the fleas to spread.
In addition, dogs are also susceptible to fleas when they are active outdoors. Flea infestations can cause itching, redness, or sores on your dog's skin. If you notice these symptoms in your dog, it is recommended that you take your dog to the veterinarian as soon as possible so that the flea infestation can be treated. The veterinarian will provide appropriate medical treatment based on the dog's condition. In order to prevent your dog from being infected with fleas, it is recommended that you wear anti-flea belts on your dog regularly, and use a special anti-flea lotion to clean your dog's skin after bathing your dog every week. This effectively kills fleas and prevents them from surviving long-term on your dog.