Thank you so much!! The majority of the shots I've taken are of animals in zoos (though a couple are of wild animals). I'd love to be able to see these guys in the wild, but until I have the money to do that, it'll be zoos for me xP
Yeah, I use digital now because it's so much easier to delete stuff and you don't pay as much because there are no film costs... and yeah the easiest way to get through fences is to have a good zoom lens (and hope the animal is far away from it). For glass (if it's a glare) try wearing a black shirt or carry a black umbrella around... something along those lines.