Any kind of plastic jug, washed out and labels removed.
Empty jugs may be placed in exhibits (maybe with small pieces of food inside), where they will be thrown around and played with.
Jugs with their caps on and small holes become reusable food dispensers, although some of the monkeys have figured out how to remove the caps and get the food the quick way.
Species this can work for:
-- this information comes from The Zoo.
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Last update 29-Aug-1998 by DBS.