If another dog enters a home infested with fleas, the fleas will perceive the new dog as an additional host and may jump onto the dog to feed on its blood. Fleas are highly opportunistic and can quickly reproduce, so they can easily infest new animals in the vicinity. These fleas will then reproduce and continue their life cycle, laying eggs which will fall off the dog and develop into larvae and pupae in the environment (such as carpets, bedding, or cracks in floors). Therefore, the presence of a new dog in a flea-infested home can worsen the infestation if appropriate measures are not taken to control and eliminate the fleas. It is important to regularly treat dogs and their living areas to prevent and manage flea infestations.
