Stock Photo - Cantharides or Spanish fly, as it is often called, is given to farm animals to incite them to mating and sometimes to humans for the purpose of seduction. The cantharides excreted in the urine irritate the urethral passages, causing inflammation in the ge

Stock Photo: Cantharides or Spanish fly, as it is often called, is given to farm animals to incite them to mating and sometimes to humans for the purpose of seduction.

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