You'd be surprised how much stuff a dog can pack. Burros are darn agile critters too and can carry a tremendous load. The best thing about them is they can both be eaten too. A husky mutt could come in darn handy in rough terrain I tell you. Let's say you've got a base camp at a lower elevation and an OP up higher, well all you have do is load Fido up with chow or canteens or clips and whistle him up then he can be whistled back down or kept up there at night for sentry duty. A dog's ears and nose can come in darn handy to alert you to movement on the perimeter. Dogs are pretty good morale boosters too. Maybe some burros and dogs could be drafted - the Public wouldn't complain too much about that....