What poisson did the penan's use?

The Penan people, an Indigenous group in Malaysia, traditionally used poison from the bark of the Upas tree (Antiaris toxicaria) for hunting. This toxic substance was mixed with water to create a potent poison that would be applied to their blowgun darts, allowing them to effectively hunt small to medium-sized game. The use of such poisons in their hunting practices reflects their deep knowledge of the local flora and fauna.