| Re: Did you know?
Fleas spend most of their time off the host, they hop on for a feed and then leave again. To find a host fleas sit and face the light, they are most sensitive to green light. When something passes in front of the light they jump towards it thinking it's a host they can feed on. There was a flea trap based on this principal on telly years ago - the trap had a green light that turned itself off every so often and the fleas would jump towards the trap getting caught in the tray full of sticky goo.
Anyway, perhaps the reason fleas don't use dying animals as hosts is because the animal is too sick to move around therefore is not being recognised as a host? It's certainly a simpler reason than fleas having some sixth sense about their host or being able to detect differences in blood from a reduced heart rate and maybe Occam's razor can be applied... |