Alright...I've read Dogland and other than sharing characters with The Gospel of the Knife, the two books really are nothing alike. I really didn't know if there would be a strong tie between the two novels and, well, there isn't.
Dogland is better, more focused, more emotionally powerful. Gospel, up to the retelling of the Gospel, is smoother reading.
That's probably about all the reviewing I intend to do with Dogland, but I just wanted to mention it. Very, very briefly.