Siphonaptera are wingless insects otherwise know as fleas. They are very small, measuring between 1-4mm long.
Fleas are known for their ability to jump large distances, which can be up to 200 times their body length.
Fleas are distinctive looking, with their bodies being:
Only adult fleas are parasitic and feed by sucking the blood of warm-blooded hosts such as birds or mammals, making them common pests.
The larvae are not usually parasitic, but feed on surrounding organic matter.