I came across this pdf while looking for something else and thought it might be of interest. It is species lists for various USA zoos from USDA inspections from recent years (I haven't actually read through the whole thing, only the first few pages [of 175] but I see 2014, 2015 and 2016. I don't know how many zoos are covered or what states they are in - the first ones seem to be roadside zoo type places (?). Skimming down, the lists are very short and only seem to be mammals, but someone better versed in US zoos and USDA reports could probably say what it is all about.
I'm sure similar USDA reports must be online for other places and years as well.
https://www.aphis.usda.gov/animal_welfare/downloads/awa/Inspection_Reports/E/AWA_IR_C-MA_secure.pdf
I'm sure similar USDA reports must be online for other places and years as well.
https://www.aphis.usda.gov/animal_welfare/downloads/awa/Inspection_Reports/E/AWA_IR_C-MA_secure.pdf