yes, they bite anything with hair/fur. lice on the other hand bite only people.
Fleas bite and could produce disease to people.
maybe
The rats were infected with fleas. The fleas were infected with diseases that were transmitted to people by thr bite of the flea.
No, fleas will live in your home and bite people instead. Your home will need to be treated for fleas if a fleas are seen!
If they bite you they can cause itching and irritation depending on where they were before they got on to you they can also transfer disease from other people or animals to you. For example the plague was transfered by fleas from rats to humans.
They probably called it a flea market because fleas can crawl in and bite people up.
Yes they do.
Bed bugs do not bit through sheets. But there are bed bugs that bite animals and people for their blood, like ticks and fleas. Ticks look like cockroaches but smaller and fleas are really little and they jump really high.
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Fleas don't usually live in human hair but they sure do bite. So if you're living with a cat who has fleas be ready to wake up in the morning with red bite marks all over your skin. Sometimes fleas do live in human hair but as soon as they find an animal body they go there. Fleas produce 50 eggs a day and these eggs get into the carpets and floorboards and can hatch up to 13 years later ! So there are plenty of fleas to come on to humans too.
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Fleas do not bite in the sense that they have no jaws or teeth. Instead, they have a highly developed set of mouth parts which act like a syringe needle. When flees bite, they actually drill through the skin to get to a blood vessel to drain blood from it.