"A study performed in the temperate forests of southern Argentina showed a mutualistic seed dispersal relationship between D. gliroides and Tristerix corymbosus, also known as the Loranthacous mistletoe. The monito del monte is the single dispersal agent for this plant, and without it the plant would go extinct. The monito del monte eats the fruit of T. corymbosus, and thus disperses the seeds. Scientists speculate that the coevolution of these two species could have begun 60–70 million years ago."
South American marsupial that grows to about 5 inches long, and whose tail stores fat to almost double its body weight. This mammal is in danger of extinction, but not because of us humans who don't affect climate or any other systems on our planet. Humans don't affect anything - we're neutral in every way.