Hi all , some of you may already know this but you can actually walk round some zoos on Google street view. So far I know that this applies for Yorkshire wildlife park, Bristol zoo, longleat safari and adventure park, Paradise wildlife park and zsl London and zsl whipsnade zoo. All though some parts of the zoos you cant access and you cant see many animals it may be worth having a look at but don't forget most of these would of been done some years ago so may be a bit dated. I personally think that these are very useful and hopefully some more zoos will also allow people to look at them on street view. have fun
There's a thread on this already, can't post a link because I'm on my phone. There are quite a few zoos on Street View but the only one that immediately springs to mind is Prague. Sorry for the lack of help but it's one of those days I'm afraid!