By Miki CollinsLAKE MINCHUMINA, Alaska —“Puppy-puppy-puppy!”I paused on an outcropping boulder a few feet above the base of a low bluff. Behind me, the moss-covered shale slope ascended upward, a scattering of spruce clinging to shallow soil.Just a couple of feet below, Cricket, Beetle, Skeeter and Junebug searched for a way up with the eternal optimism of not-quite-8-week-old pups. Read more here: http://newsminer.com/bookmark/19864286-Alaska-sled-dog-puppies-shows-growth-spurt-in-mind-body-and-skill-
