WHOLETTHEDOGSOUT indeed? A dog in the center of the grid, and several dog-breed related answers, all clued as something other than a dog. Cute, I guess. My favorite is HUSKY (*66A: Like Lauren Bacall's voice) because, Lauren Bacall.
This might be the first puzzle that I can remember that has no symmetry whatsoever. It's sort of symmetrical at the top, but the bottom is not, and the sides sort of look it at first, but really are not. I don't mind, though. I mean, who ever said that all crosswords had to be symmetrical? If you're going to concede on the symmetry, however, you might want to have better fill than HMO, OONA, ACE, YAO, OAT, XRAY, RCA and RHO. And that's just two consecutive rows. After the thematic 15 we find ORA and ISEULT. Yuck.
I'm not much of a dog lover, preferring their natural enemy the CAT, so the cockles of my heart were not warmed by the breeds or the central image. AMPM, NCOS, ATALL, UKES, IDUNNO, ENNE, TYR, AMAH, MSU, CRAT, EWER.
Roll over. Play dead. Good dog.