This is an article I came across some years ago. I am sure many of you have read it before but I thought I would post it for those that have not. It is excellent reading for anyone interested in zoo exhibit design. http://www.zoolex.org/publication/conway/how_to_exhibit_a_bullfrog.pdf
Thanks for posting it on this forum, as it is truly one of the all-time great zoo essays. It is always nice to re-read such an innovative piece of literature.