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Didelphis marsupialis
The common opossum is similar in size to a house cat. The fur of the opossum is actually yellow in the under-fur, but is hidden by the longer black guard-hairs that cover it, while the tail, fingers, and face are lighter "with the tail being without fur, somewhat similar to a giant rat tail." It can measure nearly 20 inches long. It has large ears that are usually black, and its face is usually a pale peach in color, with black whiskers and eyes that reflect reddish in light. With a body length of nearly a foot, and a tail that can reach almost two feet, the common opossum is one of the larger members of its family. They can weigh in at over three pounds. (information from Wikipedia)
Wooded area
I know these images are terrible, but they're the best I could manage in the dark and with all the limbs.
Aaron just a guess aftert looking at all of the 'possums here http://en.wikipedia.org/wiki/List_of_mam... and here http://www.mammals-worldwide.info/panama...