For the first time the medicinal leech Hirudo medicinalis has been bred in captivity at London zoo, part of a longer-term project to help this fascinating if unloved creature. Once widespread in ...
Photomacrograph of the medicinal leech Hirudo verbana. Leeches are aquatic, blood sucking, segmented worms, which mainly feed on mammalian blood. In a single feed they can consume over 3 times their ...
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