This was cuter than I expected:

"Little Poncho was found on the side of the road with his dead mother and was rescued. Luckily he bonded with this German shepherd giving him a new lease on life. This video shows you how nurturing and loving the animal kingdom really is. Watch this video and see this amazing animal behavior with two completely different species. How this opossum found this caring white shepherd is truly a miracle."

http://www.viralvo.com/opossum/