Fleas are highly specialised bloodsucking parasites.
They are light brown to mahogany in colour and roughyl oval shaped. Their laterally flattened appearance enables them to quickly move through the hosts hair Measuring 2-8mm in length the adults are entirely covered with a series of bristles and combs that assist them i clinging to the host. The small head is equipped with sawing and sucking mouthparts, and two tiny simple eyes.