WTF Fun Fact – Giraffes vs. Acacias

Acacias, a tree whose leaves giraffes feed on, release an airborne chemical called ethylene when eaten. Ethylene alerts nearby acacia trees to produce tannin, a toxin that makes the leaves poisonous. Giraffes avoid this by first eating trees downwind from others. – WTF Fun Facts

Source: https://www.tanzania-experience.com/blog/acacias-clever-species-of-trees/

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