Utreras B., V., E. R. Suárez R., G. R. Zapata-Ríos, G. Lasso, and L. Pinos. 2005. “Dry and Rainy Season Estimations of Giant Otter, <i>Pteronura brasiliensis</I>, Home Range in the Yasuní National Park, Ecuador”. Latin American Journal of Aquatic Mammals 4 (2):191-94. https://doi.org/10.5597/lajam00085.