Marcel the monkey from the hit nineties sitcom Friends was actually played by a female capuchin named Katie, and she was entirely written off the show because she kept throwing feces at the actors.

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Marcel the monkey from the hit nineties sitcom Friends was actually played by a female capuchin named Katie, and she was entirely written off the show because she kept throwing feces at the actors. While David Schwimmer publicly expressed his hatred for working with the animal, the real issue was that this primate completely rejected the polished professionalism of a major television set by acting like, well, a literal monkey. It is deeply poetic that a creature brought in for cheap laughs ended up mentally breaking a cast of millionaire divas simply by tossing her own biological waste at them during emotional scenes. Katie eventually went on to star in Outbreak, proving that her chaotic workplace behavior did not ruin her Hollywood career in the slightest, though the human cast members probably still need therapy