They released just 30 predators into the wild—then the snakes started vanishing. Wildlife teams had spent years tracking an invasive snake population that was devastating local species, and the plan seemed straightforward: introduce a limited number of natural hunters to regain control.
In 1979, Japan released about 30 small mongooses on Amami Oshima, a remote island in the warm waters between Kyushu and Okinawa. The animals were intended to control the local population of the habu, a venomous pit viper responsible for hundreds of bites each year across the Amami Islands.The habu is a nocturnal snake that can grow past two meters. It hunts using heat-sensing pits between its eyes…
They released just 30 predators onto the island, then the snakes started vanishing. Wildlife teams had spent years battling an invasive serpent plague that was devastating native birds, so the plan seemed bold but logical.
In 1979, Japan released approximately 30 small carnivores on a remote island with the intention of controlling a venomous snake population. The animals were mongooses, known for their speed and partial resistance to snake venom. The plan appeared to work initially, as snakebite rates declined in the years that followed. However, the mongooses were not responsible for the reduction.The island in qu…