A new study finds men with beards carry more germs than dogs.
Swiss researchers tested the facial hair of men and dog fur from various breeds.
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Study author Professor Andreas Gutzeit told the BBC that the researchers found a significantly higher bacterial load in the men's beards compared with the dogs' fur.
Some of the men tested positive for microbes that actually posed a threat to human health.
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Experts say men should shampoo their beards regularly.