Fleas are a type of wingless parasite found worldwide. They feed off the blood of humans and animals such as dogs and cats. Since fleas use a wide range of hosts, diseases can be transferred from one host to another. Fleas are known to transmit tapeworm larvae and, uncommonly, the disease murine typhus. Although it can seem overwhelming when trying to get rid of fleas, you can do it successfully by knowing these important flea facts and treating your pets, your home, and your outdoor environment at the same time.