This is a group of mammals I take extra joy in seeing new species of, considering how rarely they're exhibited! I'll be visiting South America next month, and I hope to see the following species for the first time:
1.) Caluromys philander (Sao Paulo)
Bare-tailed woolly opossum
2.) Didelphis albiventris (Buenosair)
White-eared opossum
3.) Didelphis marsupialis (Sao Paulo)
Southern opossum
4.) Lestodelphys halli (Temaiken)
Patagonian opossum
5.) Lutreolina crassicaudata (Zoo Batan)
Lutrine opossum
Some of this information I grabbed off ISIS in late 2011, so not sure how updated it is.
Elsewhere I've seen:
1.) Virginia Opossum in my backyard, among other places.
2.) Gray Four-eyed Opossum at the Plzen Zoo (looks like no longer as of 2012)
3.) Gray Short-tailed Opossum at the Louisville Zoo, KY
4.) Northern Red-sided Opossum at the Cincinnati Zoo, OH
5.) Yapok at the Dallas World Aquarium, TX (This thread inspired me to post my Yapok photos
http://www.zoochat.com/559/dallas-world-aquarium-2010-a-305559/
Isis had incorrectly listed the following 2 species:
1.) Ihering's Three-striped Opossum at Wildlife World, AZ
2.) Elegant Fat-tailed Mouse Opossum at Omaha's Henry Doorly Zoo, NE
So I was pretty let down. Not sure if/when these places used to have these species.