Yellow-crowned brush-tailed rat
The yellow-crowned brush-tailed rat is a South American species of brush-tailed rat in the family Echimyidae. It is found in Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela. They are nocturnal and arboreal animals found in lowland evergreen rainforest, probably restricted to igapó and várzea habitats. Sometimes they can be seen at the entrances of their dens, which are often in tree holes on the borders of rivers.