these are all the non-human animals on state/territory flags.
bear: (california, missouri)
cow/bull: (delaware, kansas, oregon, vermont)
eagle: (illinois, iowa, michigan, missouri*, new york, north dakota, oregon, pennsylvania, utah, american samoa)
honse: (kansas, new jersey, minnesota, pennsylvania, idaho, south dakota)
buffalo/bison: (kansas, wyoming)
pelican: (louisiana)
bee: (utah)
badger: (wisconsin)
beaver: (the BACK of oregon's flag)
*the missouri flag has the US coat of arms on it, which itself depicts an eagle. this kind of feels like cheating. also the US virgin islands flag has what looks to be a simplified metal outline of an eagle which i'm not counting. sorry if this offends any US virgin islands flag fans. a similar exception applies to the wyoming flag where on the flag, the seal is used on a throne of some sort and doesn't depict the actual animal. so it does not count.
the state with the MOST animals on it is kansas, with three separate species. it has five bison, four honses, and four bulls, totalling thirteen animals in total. this is the most of any flag. (a beehive is depicted on utah's flag, which likely contains a few thousand bees, but they are not visible and so i am not counting them)
the animal with the MOST states depicting it is, unsurprisingly, the eagle. second place goes to the honse.
that is all. thank you
