Leeches are famous as blood-suckers. The species that feed on blood have special chemicals in their saliva that prevents blood-clotting. Many blood-feeding leeches attack only fish, a few attack any vertebrate (including people), and a few are specialists on another group of animals, like turtles or waterbirds. There are also lots of leech species that don't suck blood. They are predators, eating worms, snails, aquatic insects, and other invertebrates.
The Minimum: 2 Months or 100 Total Hours. Studying for the LSAT should really take at least two months (or about 100 total hours of studying). Any less than that, and you probably wonât get the practice youâll need to get through the concepts tested.
If you're having trouble getting motivated to study: 1  Pick an exam session within the next 2-4 weeks. 2  Decide how much time you need to study every day. 3  Try to average at least that amount of study time every day.  The looming exam date will keep you motivated to not just to devote the hours, but to study efficiently.