These Mexican boxers are taking undetectable Aztec performance enhancers and apparently even Michael Vick is involved
"Ironically, Michael Vick has also been known to call himself Ron Mexico. He adopted this name after contracting genital herpes. Questions have risen as to whether he contracted the herpes from a human being or from one of the dogs on his now defunct so called dog-fighting operation. Why would Vick name himself “Mexico” unless he shared a particular Mexican philosophy? Why would a particular female dog’s teeth have been filed down had she in fact been used for fighting and not something else? Like a pit-bull, terrier, Vick is known for his small size yet incredible speed, agility, and strength. Vick was once accused of steroid use but his performance enhancer of choice may never be detected."
http://bleacherreport.com/articles/389881-michael-vick-and-israel-vazquez-using-animal-based-performance-enhancers

"Ironically, Michael Vick has also been known to call himself Ron Mexico. He adopted this name after contracting genital herpes. Questions have risen as to whether he contracted the herpes from a human being or from one of the dogs on his now defunct so called dog-fighting operation. Why would Vick name himself “Mexico” unless he shared a particular Mexican philosophy? Why would a particular female dog’s teeth have been filed down had she in fact been used for fighting and not something else? Like a pit-bull, terrier, Vick is known for his small size yet incredible speed, agility, and strength. Vick was once accused of steroid use but his performance enhancer of choice may never be detected."
http://bleacherreport.com/articles/389881-michael-vick-and-israel-vazquez-using-animal-based-performance-enhancers