It is absolutely heartbreaking when Edgar tries to pick up the phone and call for help, but can't because he's mute. I've been mulling that over for a few chapters, and it's always accompanied by this sudden jolt of realization -- he can't talk -- that makes the whole scene that much more interesting.
The book's written well, but I feel like the dogs trump the humans in the time and attention Wroblewski devotes to them. Clearly, the animals take precedent. Runs a little slow in places, but there's a lot to get through. Here's hoping I make it!