Julie,
you did a nice job with these. I find that Giant Schnauzers, Bouvier, Newfies and black Chows are really difficult to light. Again, no reflectivity to their coats. The Giants here seem to come off of the lighter backgrounds better but it's still hard to get any highlights from the coats.

Now, this is where you need lots of watt/sec. in your strobes. Nice dogs.

Jim