This Wall Street Journal feature on Iraqi bomb-sniffing dogs with PTSD is obviously sad and upsetting (because putting innocents in harm's way is generally so). But beyond the story of the shell-shocked Lab named Gunner, this line jumped out at me:
Zoom, another Lab, refused to associate with the Marines after seeing one serviceman shoot a feral Afghan dog.
Holy shit. Zoom, a canine conscientious objector. (Sure, he was bribed back into service with a few chews on a squeaky toy, but still, talk about species-wide loyalty.)