The Dosso Partial Faunal Reserve, established in 1962, is a 3,065-square-kilometer protected area in Niger's southwest Dosso Region, situated in the seasonal Dallol Bosso valley near the Niger River. As part of the W Transborder Park complex, it safeguards species like African elephants, hippos, gazelles, and the critically endangered West African Giraffe. The reserve serves as the southern endpoint for the last sustainable herd of West African Giraffes, which migrate seasonally between here and the Kouré region.