I've found a few websites with horrible and very sad information. I loved the Iditarod until now. I never knew that! I feel so guilty. I am NOT saying ANY dog sled team on PT is like this. I know PT's dogs are VERY well loved. Here:
http://www.peta.org/mc/factsheet_display.asp?ID=130
http://www.helpsleddogs.org/faq.htm
http://www.hsus.org/pets/issues_affe..._iditarod.html