Painting of Thick-tailed opossum ( Lutreolina crassicaudata):Population occurring in eastern Colombia, southern Venezuela,and Guyana, and another in eastern Bolivia, northeastern Argentina,southern Brazil, Paraguay, and Uruguay,Found in lowland and mid-elevation tropical moist forests,grasslands, and shrublands, as well as in forest edges. Alwaysassociated with streams and rivers.Roosts in hollows in trees, dens of other animals, and nestsconstructed among the vegetation. An excellent swimmer and also a good climber, this is a nocturnal species.Primarily carnivorous, feeding on small vertebrates on land andin the water, as well as crustaceans, insects, and other small animals.