This is a common question among pet owners. While it's technically possible for fleas to lay eggs on skin, it's unlikely. The vast majority of fleas will lay their eggs on the fur or feathers of animals. This is because the eggs need to be close to a food source (i.e., the blood of an animal) to survive. If a flea were to lay its eggs on the skin of an animal, the eggs would simply fall off and would not have access to a food source.However, in rare cases, fleas may lay their eggs on the skin of an animal if the animal has a very dense coat of fur or feathers. In such cases, the eggs may hatch, and the larvae may survive by feeding on the animal's skin cells. If you find that your pet has fleas, it's important to consult a veterinarian to get rid of the fleas and prevent them from laying their eggs on your pet's skin.