Fasciola gigantica is a large parasitic flatworm, commonly known as the giant liver fluke. It primarily infects the livers of various mammals, including cattle and buffalo, and is found in tropical and subtropical regions. The fluke can grow up to 10 centimeters in length and has a complex life cycle that involves freshwater snails as intermediate hosts. Infection with Fasciola gigantica can lead to a disease called fascioliasis, which may cause liver damage, anemia, and reduced productivity in livestock. Humans can also be infected through the consumption of contaminated water or plants, making it a significant concern for public health in affected areas.