Fleas vary in size quite considerably – the Cat Flea is one of the smallest at about 2.5mm long, whilst a heavily pregnant female Human Flea could be as big as 4mm!
The largest known flea in the world is the Hystrichopsylla schefferi — a flea found in the nest of a mountain beaver in USA. It can grow up to 8mm long.
Britain’s largest flea is, coincidentally, a parasite of Britain’s smallest mammal.
Hystrichopsylla talpae (usually found on moles) grow to a length of 6.5mm and can be found on the pygmy shrew…
It is now extremely rare to find a human flea on a human (or, for that matter, a cat or a dog) in the UK — due to increased hygiene standards.
Top Flea Facts
- Fleas can jump a distance that measures 150 times their own size.
- They can also jump 30,000 times in a row without stopping – and in opposite direction (left and right) with every jump.
- A female flea consumes 15 times her own body weight in blood every day.
- Flea fossils date all the way back to the Lower Cretaceous period … about 100 million years!
- A flea will live for 2 to 3 months.
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