Do leeches have sensory Organs (Eyes, ears, and teeth)?

Do leeches have sensory Organs (Eyes, ears, and teeth)? When we hear the word leech, the first thing that blazes into our minds is clinging and sucking on something disgusting. Humans have a negative perception of leeches. We regard them as bloodsucking bugs; the epithet “leech” is an insult. However, the majority of them do […]