Hialeah man connected to several horse killings thanks to his fingerprintsAnother man has been arrested in connection with a brutal horse slaughtering in Miami-Dade. Juan Martinez-Gonzalez, 44, has been charged with improper disposal of a dead animal after he and two other men were caught with coolers filled with freshly severed horse legs. It's the fifth arrest in the crackdown against horse slaughters, which first reared its ugly head in 2009. Since then at least 24 horses have been butchered for their meat, which usually ends up on the black market. Martinez-Gonzalez allegedly took part in several killings in May....