Order Siphonaptera, flea
Printable Crossword
We have the itch for fleas
Fleas can be found worldwide. They live on a wide variety of hosts and can develop large populations in a short period of time. About 94 percent of fleas are found on mammals and about 5 percent will be found on birds.Fleas are external parasites that depend on a host for a blood meal. They bite often and leave an itchy, red spot. They are considered a public health concern because they can spread many types of disease.