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The original was posted on /r/todayilearned by /u/Double-decker_trams on 2024-07-04 06:15:15+00:00.

Original Title: TIL in 1970 one monkey’s head was transplanted to the headless body of another monkey. Although the monkey was now paralyzed from neck down, they could still hear, smell, taste, eat and follow objects with its eyes. Died in 9 days because of immune rejection.