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Gordo

Gordo, a squirrel monkey, became the first monkey launched into space on December 13, 1958. Gordo was also the nickname of astronaut Gordon Cooper.

References:

Mercury (Miscellaneous)
Mercury 7 (Miscellaneous)
Gordon Cooper (Miscellaneous)
Apollo 12 (Miscellaneous)
Alan L. Bean (Miscellaneous)
Richard Gordon (Miscellaneous)
Ham (Miscellaneous)
Leroy G. Cooper (Miscellaneous)
Gemini 11 (Miscellaneous)
Gordo, a squirrel monkey, became the first monkey launched into space on December 13, 1958.