As is usual, I don't know if this has already been brought up or suggested, but I wanted to propose the small change of the menus saving the filters you selected after exiting. Primarily referring to the zoo animals screen (the ones already in your zoo). I often find that while managing my animals I will use filters to find what I'm looking for, and then some alert pops up that I must attend to, then returning to the zoo animal menu I have to re-select the filters I was previously using. Since there is already a button to 'clear all filters' it would seem a nice quality of gameplay improvement to have the game remember the filters between menu selections.