Since 1982, the Yacyreta Binational Entity established the Atinguy Fauna Refuge, on a 100-hectare property, located 18 km from the entrance to the City of Ayolas; on the road that connects it with San Cosme and Damián, bordering to the east with the Atinguy stream.
The existing zoological collection in the refuge is made up of mammals, birds and reptiles, these species inhabit the area of influence of the Dam and are also brought from other regions of the Country. The animals are distributed in cages, pens and free spaces appropriate to the conditions suitable for each species for the purpose of observation, breeding and reproduction.
In the educational aspect: Develops didactic activities for works related to Natural Sciences for children, young people and adults.
In the scientific aspect: Studies the behavior, feeding, sanitation, paying special interest in the reproduction of species in danger of extinction such as Blastocerusdichotomus (Swamp Deer), Chrysocyonbrachyurus (Aguara Guazú), CraxFasciolata (Mytu). With all these species it has achieved its reproduction in captivity in the Atinguy Fauna Refuge.
In the Tourist aspect: It serves as another attraction for the area, both for national and foreign visitors.