I don't think this is considered a sport...but it is an activity, and a great one at that!
Anyway, just curious how many people take their dogs "packing" or backpacking? As in when you hike, or backpack, do you let your dog carry his/her own supplies such as water, bowls, treats, food, etc?
Here's one of my dogs, Kapu, with his Ruffwear pack on a backpacking trip in Flagstaff, AZ.