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The ability of nonhuman animals to project individual actions into the future is a hotly debated topic. We describe the caching
behaviour of tayras (Eira barbara) based on direct observations in the field, pictures from camera traps and radio telemetry, providing evidence that these
mustelids pick and cache unripe fruit for future consumption. This is the first reported case of harvesting of unripe fruits
by a nonhuman animal. Ripe fruits are readily taken by a variety of animals, and tayras might benefit by securing a food source
before strong competition takes place. Unripe climacteric fruits need to be harvested when mature to ensure that they continue
their ripening process, and tayras accurately choose mature stages of these fruits for caching. Tayras cache both native (sapote)
and non-native (plantain) fruits that differ in morphology and developmental timeframes, showing sophisticated cognitive ability
that might involve highly developed learning abilities and/or prospective thinking. 相似文献
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