Small parasitic insects.
Long limbs and hind adapted for jumping.
Length between 1.5 and 3.3 mm.
The female lodge about 700-800 eggs in series of several dozen. Eggs are deposited directly on the host - dogs, cats, mice, rats, poultry and even humans, which means that these generations are born live near a food source.
The body is hard, shiny and covered with many short hairs and spines directed backwards, which also helps to move to the body of the host.
Flea’s body is able to withstand high pressures, characteristic which is an adaptation to survive attempts to be removed by scratching or crushing.
Fleas lay white eggs, visible only with a magnifying glass.
Adult fleas diet consists exclusively of fresh blood, while the larvae feed on adult flea feces.
Fleas are external parasites and cause unbearable itching, because they release toxic substances into the bloodstream of the victim. Fleas can cause allergies to sensitive individuals to their saliva and dermatitis, irritation or, in severe cases, even anemia, intestinal worms and other stomach affections. Body areas preferred by fleas to feed are, most often, ankles and feet.
A flea can jump, vertical, up to 18 cm and horizontally up to 33 cm? Thus, the flea is one of the best jumpers in the animal world (relative to body size) and is second after the jumper frog.
The female flea needs only a chink of 4 mm to lay their eggs?