Please do your research before you post here.....if you have not got the correct information do not even bother to air your viewpopints. do Your reading, and take off your blinders. First of all not all the dogs wear booties....They do not always stop for the requiered check poiints...or take the mandatory rest periods. It is not run like the original run...where there were relay teams...these dogs are forced to run the entire trip, and a a much faster spped!! DUH! NOT ALL THE DOGS ARE SIBERIAN HUSKIES...WHERE DID YOU GET YOUR INFORMATION? SOME OF THEM ARE MIXED BREEDS, AND SOME OF THEM ARE JUST POOR MUTTS1 i HAVE SEEN THEM...HAVE YOU? AND YES A DOG WILL NOT RUN ANYMORE EVEN IF IT IS WHIPPED....BECAUSE IT IS DEAD....PLEASE READ THE LINK AND THEN RESPOND......