Though I don't wish to look like TOO big a c**t for asking this, two thoughts:
1. No dogs were harmed in the making or playing of it (hopefully)
2. Where's the dividing line between this and GTA (pick up prostitutes then murder them...) or Pokémon (capture a wide variety of seemingly sentient animals and force them to fight to the "faint", which doesn't seem far off from death really)? Or even The Sims? (Lead your guys to light themselves on fire, watch as they die)
Just because the 3D sprites are different and a touch too realistic for your tastes?
NB I have no desire to play the game and still find the subject matter a bit distasteful, but I detect an air of hypocrisy... In all seriousness, how many of the people yelling "that's not cool" here also cried foul when Germany banned Carmageddon until the people you can run down were retconned into zombies and given green blood, or when Thrill Kill was banned pretty much everywhere?