“For each jump, the leech coils back before taking off,” Fahmy and her co-author Michael Tessler write in the paper.

For example, the less effective leech, Hirudo decora, was passed off as the more effective medicinal leech. H decora, which was imported, does not bite as deep and so was less effective at ...

It's a great time of year to meet with the giant Amazonian leech. Its kind is just emerging from the bottom muck, where they dug themselves in to wait out the three-month dry season. They'll be ...