Dian Fossey studied Gorillas extensively for 18 years. she fought off deforestation, poaching, and is probably the sole reason the mountain gorillas of Rwanda are not extinct today. "Gorillas in the Mist" with Sigorney Weaver is a great movie!
Dian Fossey spent 18 tempestuous years studying endangered mountain gorillas in Rwanda's Virunga Volcanoes. She was also devoted to their care and protection. Fossey was eventually murdered, probably by poachers, with whom she had waged a relentless war.