I love ring-tailed lemurs (and all lemurs).  This particular picture was taken at the San Francisco Zoo, and the lemur exhibit is probably one of the nicer animal enclosures that can be found at the zoo (there are several types of lemurs in the enclosure).

If I am fortunate enough to go to Madagascar one day, I will be going because of the lemurs.

Sumatran Tigers Fighting: San Francisco Zoo

Originally uploaded by dbillian

This is a picture at the San Francisco Zoo, a picture that was made much more difficult because of the security procedures now in place because of the tiger attack a few years ago (fence, security glass, etc.).