Long confined to the mountains, Japanese leeches are invading residential areas, causing swelling, itching and general discomfort with their blood-thirsty ways.
Yamabiru, or land leeches, have become a problem in 29 of Japan's 47 prefectures, according to the Institute for Environmental Culture, a private research facility in Chiba prefecture, east of Tokyo.
The little suckers are riding into towns and villages, hitching lifts on deer and boar whose numbers have grown due to re-forestation and dwindling rural populations.
Once there, the leeches, which measure in at about 1.5 cms before a meal, take to feasting on warm human flesh.
The first part of a Yahoo! News report.
