It's raining cold, large drops that pool on the treacherous ice in Skagway, making it the kind of day that discourages dog walking. Regardless, Mo Mountain Mutts pulls up to Seven Pastures in their shiny white minibus and nine dogs of varying sizes disembark. They shed their leashes and head to Skagway River under the direction of Mo and Lee Thompson, forging their own path through the foliage. Once the pets reach the sand, they sprint, sniff, wrestle and socialize.

Mo Thompson offers advice for introductions with the canines whose names range from Whiskey to Tater.

"Don't stick your hand o...