Ophionyssus natricis or Reptile mite is a parasitic mite most commonly found on snakes, but also occurring on captive lizards, turtles, crocodiles and other reptiles. The parasites feed on snakes, which cause the bodies of the mites to be engorged with blood and fluids from the snake. Once the mites feed by puncturing through the snake skin, the snake usually shows symptoms of irritation and discomfort. Also this provides a point of entry where diseases from Aeromonas spp. and Inclusion Body Disease (IBD) can be transmitted. Mites have also been shown to act as vectors for IBD. The pathology for disease transmission by the mites is still unknown. Human infestation has been reported.