I have been thinking about this one for a bit and got me thinking.
What are species your local zoos use as entrance species?
What are the pros and cons of those species?
Is there a trend in entrance species, or is it different in almost every zoo?
A series of interesting talks given on the future of zoos at the "ISHAR Future of Zoos symposium" (in 2012) in the USA.
I think this is quite an interesting set of talks so could of interest to zoochatters.
Zoos as resources for scientific research:
The future shape and sizes of zoos...