Where do fleas commonly lay their eggs?

Fleas typically lay their eggs on or near their host animals or in the areas where these hosts sleep and spend most of their time. This behavior ensures that the eggs are placed in an environment where they will have immediate access to a food source once they hatch, as the emerging larvae will rely on organic debris and the hair or skin from their hosts for sustenance. By laying eggs in these locations, fleas can maximize their chances of survival and reproduction.

While fleas might be found in various environments, such as soil or even areas with high humidity, these locations do not provide the same advantages in terms of immediate access to a host. Additionally, fleas are not aquatic insects, so laying eggs in water is not typical behavior for them. Thus, the choice indicating that they lay eggs on the host or in its sleeping place correctly reflects their reproductive strategy.