Discover the fascinating Drab Atlantic Tree-rat (<i>Isothrix pirmalay</i>), a medium-sized rodent thriving in the lush rainforests of eastern South America. This nocturnal creature plays a vital role in its ecosystem as both a seed disperser and prey, showcasing remarkable adaptability through its diverse diet and social behaviors. As a vulnerable species, understanding its habitat and role highlights the importance of conservation efforts to protect this unique inhabitant of tropical rainforests.