Many leech species have one or more pairs of eyes visible on the top of their front end. Leech species that suck blood have sharp teeth. Predatory species may have teeth, or may have only crushing jaws.

How many teeth does a leech have?

This leech seeks out its victims as they bathe, making an attachment by means of a single jaw made up of eight large teeth. A person infected with many such leeches may suffer from anemia resulting from blood loss.

Do leeches have 32 brains?

Leeches have 32 brains.

A leech's internal structure is divided into 32 separate segments, and each of these segments has its own brain. In addition to that, every leech has nine pairs of testes — but that's another post for another day.