Leeches are annelids comprising the subclass Hirudinea. There are freshwater, terrestrial, and marine leeches. Like the Oligochaeta, they share the presence of a clitellum. Like earthworms, leeches are hermaphrodites. Some, but not all, leeches are hematophagous.
Haemophagic leeches attach to their hosts and remain there until they become full, at which point they fall off to digest. A leech's body is composed of 34 segments. They all have an anterior (oral) sucker formed from the first six segments of their body, which is used to connect to a host for feeding, and also release an anesthetic to prevent the host from feeling the leech. They use a combination of mucus and suction (caused by concentric muscles in those six segments) to stay attached and secrete an anti-clotting enzyme, hirudin, into the host's blood stream.
they suck the bad blood out there body in Victorian and Tudor times they got leeches from other countries because they though it would suck all the plague out of them
humans
maggots are baby flies leeches live off blood from animals
In most cases humans get herpes from contact with other humans rather than from contact with leeches. It is technically possible for the virus to be transmitted by a leech, but it is extremely uncommon.
Leeches are flat worm-like animals found in ponds and lakes. To keep leeches under control in a water setting, it is important to have fish around that will eat the leeches. Redear sunfish are good leech eaters.
leeches
Earthworms and leeches.
leeches most likely to attach to humans
Leeches don't give birth like us humans (therefore they aren't mammals) they lay eggs.
Leeches are the class of annelids that has suckers. They use these to suck the blood out of humans and animals in order for them to survive.
You
Leeches are known to survive by feeding off the blood of other, large beings, but not all leeches live on blood. Some eat decaying vegetation or dead animals in the bottom of the pond.
people and animals blood