For some time, strolling the canine felt hazardous. Earl Vickers was accustomed to taking Molly, his shepherd-boxer-one thing-else combine, for strolls on the seaside or round his neighborhood in Seaside, California. Just a few years in the past, although, he began to expertise issues staying upright. “If one other canine got here towards us, each single time I’d find yourself on the bottom,” recalled Vickers, 69…