Animals have been feeding from blood long before Bram Stoker introduced Count Dracula or Twilight made the scene.
These 10 amazing bloodsucking animals have managed to survive by taking blood from their own predators. They belong to different reigns (insects, mamals, ...) and evolve in different elements.
Did these species adapt to include blood in their menu or did we lose, as humans, this ability we had a long time ago?.
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