I'm an avid zoo goer and I am also an amateur photographer. Here are Pix I shot last year with my Canon Xt and a 70-300 lens.
Lincoln Park Zoo
http://i293.photobucket.com/albums/m...owland/lp1.jpg
http://i293.photobucket.com/albums/m...owland/lp2.jpg
http://i293.photobucket.com/albums/m...owland/lp3.jpg
http://i293.photobucket.com/albums/m...owland/lp4.jpg
http://i293.photobucket.com/albums/m...owland/lp5.jpg
http://i293.photobucket.com/albums/m...owland/lp7.jpg
http://i293.photobucket.com/albums/m...owland/lp8.jpg
http://i293.photobucket.com/albums/m...owland/lp9.jpg
http://i293.photobucket.com/albums/m...owland/lp6.jpg
Brookfield Zoo
http://i293.photobucket.com/albums/m...owland/bz1.jpg
http://i293.photobucket.com/albums/m...owland/bz2.jpg
http://i293.photobucket.com/albums/m...owland/bz3.jpg
http://i293.photobucket.com/albums/m...owland/bz4.jpg
http://i293.photobucket.com/albums/m...owland/bz5.jpg
http://i293.photobucket.com/albums/m...owland/bz6.jpg
http://i293.photobucket.com/albums/m...owland/bz7.jpg