There are about 500 known species of leeches. most live annual life cycles, however some of the larger species will live longer.
about 100
Leeches are supplied to many hospitals in Canada by Ricarimpex and other companies. They are not widely used in treatments in Canada.
Yes, Vermont has leeches in the lakes and many of the ponds located there.
Yes, but only in places that are swampy. In other words, leeches are rare in Hawaii.
fast running rivers! there so many leeches there!
Mosquitoes, Bats, Ticks, and many other parasites/insects
none
650
60
alot
Leeches do hunt alone, although a given body of water can contain lots of leeches, and many lone hunters might wind up on the same victim.
No; leeches aren't vectors of dog true parasites but they can still infect them with other microorganisms like viruses.
Many parasites do, like fleas, ticks, and leeches.