Other fauna include the endemic frog Atelognathus patagonicus and the mammal Lagidium viscacia . Ramsar site no. Laguna de Llancanelo. A high altitude, saline lake situated on a large salt crust, in a semi-desert environment. Water originating from mountain snow melt determines seasonal lake levels.
Most vegetation is drought or salt tolerant.
A limited mountain scrub flora and Patagonian steppe reach the area around the lake. A population of 8,000 Coscoroba coscoroba take refuge while flightless during post-breeding molt. Human activities include ranching, grazing, illegal fishing, and hunting. Water provides for domestic and irrigation needs. Ramsar site no. 759.