No. 384-80 vs Imo

No. 384-80 was a squirrel monkey flown on Space Shuttle Challenger's STS-51-B mission in 1985, joining No. 3165 in Spacelab 3 experiments.

Imo was a female Japanese macaque living on the island of Kōjima, Japan, whose behavior became a foundational case study in cultural transmission among non-human animals. In 1953, primatologists observed her washing sweet potatoes in a river to remove sand before eating them, a technique she spontaneously invented. This novel behavior was subsequently adopted by other members of her troop, demonst...