Yes, but where does that practice and belief stem from and why is it a human universal ?
Thats where anthropology may offer some explanation which of course doesn't matter to the unfortunate zoo crocs which end up swallowing coins but still interesting.
I think most visitors see an exhibit’s pool as an enhanced wishing well. Throwing coins has long been an issue within zoos. Animals such as ostriches have died at Auckland Zoo due to copper poisoning.
Decades ago, zoo visitors were also encouraged to give coins to the elephant as it was walked around the zoo by the keeper. The idea was the elephant would trade in the coin for a treat, but sometimes it ingested it nonetheless.
An even worse craze was visitors throwing rubber balls to the gaping mouths of the hippopotami. Three died at Auckland Zoo due to this; as well as hippos at the Adelaide and Melbourne Zoo.

