This man holds a rainforest plant whose tuberous root is cooked and fed to dogs to make them more courageous and smart, and avoid dangers. The man, whose dog had just been killed by a puma, learned about this Amazonian plant from his now deceased father. However, he can no longer remember the name of the plant, nor can anyone in his village. Once elders die, huge storehouses of knowledge about the natural world are often lost forever. This loss of indigenous knowledge is a type of extinction that is rapidly accelerating in forest societies across the globe, making RCF’s biocultural conservation work even more urgent and important.