This Encyclopedia Britannica animals list features 8 animals that drink blood, human or otherwise.
Bloodsucking insects can pierce the skin of their prey, inject an anticoagulant or blood thinner, and suck up the protein-rich blood, all with different parts of their.
Hematophagy is the practice by certain animals of feeding on blood Since blood is a fluid tissue . Sucking or licking one's own blood from a wound is also a common human behavior, and in small enough quantities is not considered taboo.
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Leeches suck blood because it is a very good food for them. Some leeches only need to feed once a year. Pixabay, CC BY-SA.