DOG SLED RACING: Some controversy surrounds the treatment of sled dogs, particularly in the Iditarod, one of the largest and most famous sled dog races. Racers are prohibited from participating if they are convicted of cruelty or neglect, but some argue that the dogs can face hypothermia and deaths due to the harsh terrain. PETA argues that the race is unfair and it's cruel to make the dogs run so far. Others argue that the dogs are born to run and that they love to do it. And many attest to the good treatment, care, and love that sled dog owners give to their dogs.