Not abuse as such, but a fun thing to do at the zoois to make penguins chase the shadow of your hand on the pool bottom.
(
MissPrism,
Wed 15 Oct 2003, 11:16,
archived)
it definitely works on Rockhoppers,but I haven't tried it on any other kinds.
( MissPrism,
Wed 15 Oct 2003, 11:22,
archived)