Monkeys are known for their cleverness, and some of them have a unique trick. They wash their food to get rid of gritty sand. This behavior isn't universal among monkeys. It depends on the group and the situation. Recently, a group of long-tailed macaques on Koram Island in Thailand started doing this. Researchers wanted to know why some monkeys do it and others don't.

They studied the sand and conducted experiments. They observed 42 monkeys and recorded 1282 instances of food handling. The findings were interesting. Monkeys really dislike sand and actively try to remove it. However, they often clean their food more than necessary. This is not the smartest move, as it doesn't give them any extra benefit.

The study also found that not all monkeys wash their food. Dominant monkeys, those at the top of the social hierarchy, usually don't bother. Why? Because they prioritize eating quickly and having more offspring. They don't worry about the long-term effects on their teeth. This behavior is seen in other dominant animals too. They focus on immediate gains rather than future benefits.

So, while food washing is a smart strategy to protect teeth, it's not always the best choice. Monkeys, especially the dominant ones, sometimes make choices that benefit them in the short term. This is a common theme in nature. Animals often prioritize immediate needs over long-term health. It's a reminder that even smart strategies can have flaws.

Monkey Food Cleaning: A Smart but Flawed Strategy

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