Frankie’s Dawg House, a pup-friendly gourmet hot dog establishment, opened its second location Monday at 6166 Siegen Lane after a soft opening last Friday. The original Frankie’s Dawg House has been open at 2318 Cedardale Ave., near the Perkins Road Overpass, since 2011. The new location opened in the former Southfin Poke space that closed last year.