To keep themselves clean, birds will engage in "anting," where ants crawl all over their bodies. The formic acid that ants secrete help keep parasite away. However, birds have been known to rub the ants on themselves just because it feels good, and they can get addicted to anting.
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Key Facts In This Video
Birds allow ants to crawl all over their bodies to help combat parasites. 00:28
Millipedes are full of benzoquinones, which is an insecticide many times more toxic than any bug repellent. 01:47
Jaguars eat yage, which is a vine that causes intense hallucinations. 02:55