If you want to read a manga which has a dog girl, turning humans into animals (as a part of some sort of animal revenge on humans) than you could give Carnivorous Princess Yegrinna a try. Not only it contains all that, but it's way better storywise and has much less crap mixed in. Also, it seems that in both series the animals are a bit dishonest about their relation with humans.
P.S. Carnivorous Princess Yegrinna gets better after the first chapter, so I advice you to read more than just one chapter before deciding to drop it.
Inumimi like Perowan! has this dogs turning into girls theme, what it does not have however are the weird fetishes and sadists (the SM kind of sadists). If all that crap is too much for you in Perowan! you could try your luck with Inumimi.