Humans typically show some degree of avoidance to new foods, a trait that has been termed food neophobia (1). Food neophobia is widespread in omnivores and has been observed in warblers (2), rats (3), chimpanzees (4), and capuchin monkeys (5), among other species. Neophobia may have adaptive value in reducing the possibility of poisoning from unfamiliar and toxic foods, although it will also have costs in terms of limiting dietary variety.