Rarest opossum
- Who
- Handley’s slender opossum (Marmosops handleyi)
- Where
- Colombia
- When
- 1981
Scientifically described in 1981, the world’s rarest species of opossum is Handley’s slender opossum (Marmosops handleyi). Categorized as Critically Endangered by the IUCN, it is known only from two specimens collected in a tiny area of rainforest in Antioquia, Colombia, at an altitude of 1,400 m (4,590 ft).