Fleas are small, wingless, blood-sucking insects that are extremely irritating to both animals and humans alike. They can also carry and spread serious diseases and are the major cause of skin diseases in dogs, such as hair loss and itching.

Although fleas can’t fly, they have incredibly strong hind legs and are able to jump to exceptional lengths. There are many species of fleas, all of which reproduce profusely and very quickly, with different species preferring different hosts. If fleas are hungry enough, though, they will feed on almost any animal.