Worlds Best Drug Sniffing Dogs.....A US Customs Labrador named "Snag" has made 118 drug seizures worth a canine record $810 million. The greatest number of drug seizures by dogs is 969 in 1988. IN ONE YEAR! The team of "Rocky" and "Barco" patrolled the Texas and Mexico border, alias "Cocaine Alley." They were so good that Mexican drug lords put a price of $30,000 dollars on their heads.