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The original was posted on /r/todayilearned by /u/Z-A_C- on 2024-05-26 23:28:57+00:00.

Original Title: TIL that the creators of Phineas and Ferb had no idea what a platypus sounded like, so the chattering noise they had the voice actor for Perry the Platypus make was entirely coincidental to what an actual platypus sounded like