Feeds on mammal blood, using sharp teeth to make cuts and lapping up blood flow.
Attaches to hosts, secretes anti-coagulant, and feeds on blood in freshwater environments worldwide.
Parasitic insect feeds on human blood by piercing skin with specialized mouthparts while sleeping.
Arachnids latch onto mammals, birds, and reptiles, feeding on blood and potentially transmitting diseases.
Females require blood for egg production, feed on mammals, birds, reptiles, and amphibians.
Pecks other birds and sea turtles in Galápagos, drinking their blood with sharp beaks.
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