Before modern refrigeration, rural communities in Russia and Finland used an unusual technique to keep milk from spoiling: they dropped live brown frogs (Rana temporaria) into their milk containers.
Scientists later discovered that the skin of these frogs secretes antimicrobial peptides-natural antibiotics-that kill bacteria and slow spoilage, helping the milk stay safe to drink for longer.
@Rainmaker1973 #globalmuseum #frogs
