Thanks for sharing these pictures. The signs in Eurasia seem pretty good. They have big colourful pictures with not too much information. There's just enough that people might actually read them.
I like that they also try to use simple words that even younger children can attempt to read. Considering kids are what really drive zoo attendance its nice to see the zoo catering to that market. What would be cool is if the signs had something that could interact with a cell and provide more info on people phones. A code maybe that links to the zoos app.