7 interesting discoveries about the leech - 32 species brain leech species closely related to earthworms, there are more than 650 species of leeches, differing in size, diet and habitat. Leeches live in swamps, rivers and lakes the size of a leech attached to each species, highlights 7.2mm-76.2mm long leeches, especially up to 40.64cm leech. Leeches have 32 brains, because quite similar contract with the human nervous system, so the leeches are used in research on the instability of the brain. leeches are bloodsucking species, some species also feeds on decaying plant or insect and different depths. This is a voracious species, they can absorb a large amount of blood compared to 5 times their body weight. Immediately after eating, the leech will separate from the victim. The species leeches themselves can reproduce without a mate, they lay out a large number of eggs in the egg cocoons and holding his side. Each species leeches have different age, there are a few species can live up to 10 years.
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