Img 1 Cat fleas jump an average distance of 8 inches, and an average height of 5.2 inches.
Summary
Cat fleas jump an average horizontal distance of 8 inches (20 cm), and an average height of 5.2 inches (13.2 cm). At a maximum, the best performers can jump as far as 19 inches (48 cm), and as a high as 7.9 inches (20 cm).
Details
Flea Jump Distance
Ctenocephalides felis
One study observed the jumps of 450 unfed cat fleas Fig 1. On average, the fleas covered a horizontal distance of 8 inches (20 cm). The furthest leap was recorded at 19 inches (48 cm). With adult cat fleas being less than 3 mm long, a distance of 48 cm is equivalent to 160 times their body length. The shortest observed jump was around an inch (2 cm).
Fig 1 Percent of adult fleas (y-axis) which complete jumps at varying distances in centimeters (x-axis).
Other Flea Species
Ctenocephalides canis
Dog fleas can jump slightly further than cat fleas Fig 1. They leap an average distance of 12 inches (30.4 cm), and a maximum distance of 20 inches (50 cm).
Pulex irritans
Human flea and cat flea jumps are comparable.
Xenopsylla cheopis
Oriental rat fleas jump an average distance of 7 inches (18 cm).
Desert Rodent Fleas
Jumps of seven species of fleas from desert rodents were recorded in one experiment. The horizontal jump distances were similar, ranging from 3 to 5 inches (7.8 to 12.8 cm). All species combined, the average leap distance was 4 inches (10.4 cm).
Mole, Bat, & Bird Fleas
Certain flea species can’t jump well at all. Through the course of evolution they’ve lost the body parts needed to perform jumps. Typically, these species parasitize hosts that live in high aerial roosts or underground nests.
Flea Jump Height
Ctenocephalides felis
In the past, it was believed that cat fleas could leap up to 13 inches (33 cm) into the air. Newer evidence, studying the jumps of 1500 unfed fleas, shows that this was high a estimate Fig 2. Half of the fleas could complete jumps at a height of 5.2 inches (13.2 cm). This is just above the human ankle. At a maximum, one flea jumped 6.6 inches (17 cm) into the air. In another study, flea jumps were recorded as high as 7.9 inches (20 cm) from the ground, equivalent to 66 times their body length.
Fig 2 Percent of adult fleas (y-axis) which jumped above a certain height in centimeters (x-axis).
Other Flea Species
Ctenocephalides canis
Dog fleas can jump higher than cat fleas Fig 2. They leap to an average height 6 inches (15.5 cm), and can reach a maximum height of 10 inches (25 cm).
Pulex irritans
The human flea has similar jump performances as the cat flea.
Xenopsylla cheopis
Oriental rat fleas jump to an average height of 2.5 inches (6 to 7 cm). The highest jump of this species was recorded at 3.6 inches (9 cm).
Mole, Bat, & Bird Fleas
Certain species of fleas which parasitize flying or underground hosts can only perform feeble jumps.
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Hi,
As I understand it, fleas can jump up to a certain height so they won’t bite higher than that.
Assuming I cover myself so they cant bite me within that range, what’s stopping them from jumping from point A to point B then C (etc) and reach heigher exposed parts of my body?
In other words – If I wear socks, will I encourage existing fleas to jump heigher up my body in search for blood?
Could be about gravity, radius of ability to sense heat\other stuff they like, the angle of the surface.
They probably won’t jump higher up on your body (flea jumps are erratic, they can’t aim that well), but they will crawl until they find exposed skin. Rarely do they end up above the waist area though, unless the person is sitting or laying down.