After watching the animal trainers do the trick DeVito was ready to do the scene, but apparently, the monkey didn’t care for The Penguin’s menacing look, as instead of handing him a note, he jumped for the actor’s crotch.
While a guest on The Graham Norton Show, DeVito spoke about a scene where he had to take a note from the monkey’s paw.
While most of the animals that Danny DeVito had to work with in Batman Returns were penguins, the movie also included an organ grinder character who had a monkey that worked with him.