Mainly the reason why i set my game to English.
Bothered me the first time I played after release and on day 2 already changed it
I think the search bar is the easiest way to get a quick search result in your animal trading list.
Alphabetical for all languages would be nice too.
Maybe an extra filter based on continent or biome.. As example: You're working on an African part of the zoo and you only want to focus on African animals.
If you don't know which continent some animals are, you don't have to switch between zoopedia and animal trading list.