Doping cases have been reported in greyhound racing. The racing industry is actively working to prevent the spread of this practice; attempts are being made to recover urine samples from all greyhounds in a race, not just the winners. Greyhounds from which samples cannot be obtained for a certain number of consecutive races are subject to being ruled off the track. Violators are subject to criminal penalties and loss of their racing licenses by state gaming commissions and a permanent ban from the National Greyhound Association. The trainer of the greyhound is at all times the "absolute insurer" of the condition of the animal. The trainer is responsible for any positive test regardless of how the banned substance has entered the greyhound's system. However, annual reports from 2007 to 2017 published by the Florida Department of Business and Professional Regulation Pari-mutuel Wagering Division, where the majority of U. S. tracks are located, report that there is only a 0. 015% yield of a positive drug test result for any banned substances, despite what any groups who oppose racing may claim.