Yes, but the word is an irrelevance as dogs will respond to any word if they are trained to do so.
If your talking about the guy who drives the sled dogs, then I think that this one guy said a word that soundede like "mush" to make his sled dogs go. It was actually some foreign word, but an important guy (maybe a filmmaker) heard him and thought it was "mush".
does the word mush means go forward
Mush.
they are musher they mush there dogs!!
Every wheres. Mush-rooms
marsh water and cactus
because they have trained their dog to go faster whan they say "mush"
Usually "Hike" or "Mush" to get them to go.
The word "musher" is broken into two syllables: mush-er.
mush
turn right well that's easy seaka
"Ha" is an interjection often used to express laughter or amusement. "Mush" is a command traditionally used to urge sled dogs to start running.