... another loser:

The Iditarod plans to test mushers for drugs and alcohol in March, a change many mushers have no problem with -- but one that three-time champion Lance Mackey scoffs at.

"I think it's a little bit ridiculous," Mackey said Wednesday night from his home near Fairbanks after a training run. "It is a dog race, not a human race. It (using a drug) doesn't affect the outcome of the race."

Mackey, a throat cancer survivor who has a medical marijuana card, admits to using marijuana on the trail and thinks his success has made some of his competitors jealous.