Each leech is structured with 34 segments. The first five contain the brain, eyes, and one sucker; the middle 21 have nerves and reproductive organs; and the last seven have a posterior brain and tail sucker...
Leeches have 32 brains! With their nervous system being so similar to ours, they are often used in the study of invertebrate nervous systems, brain and cardiovascular disorders.Their complex nervous system can detect touch and vibrations from nearby objects.
Leeches that consume blood use their suckers to attach to mammals, reptiles, birds, and fish. Their teeth are so sharp, they’re even able to pierce the thick skin of hippos. Leeches can ingest amounts of blood five times bigger than their own weight allowing them to go up to a year between meals!
Mind-boggling...😵💫

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