Well... reading this plot couldn't keep my curiosity away for long from this game xD
I must say that the thing which I really like in this VN are the characters. They have all different personalities (and they are all good boys :D) and I really like all of them in different measures. Well... I guess it's redundant to say that my favourite at the moment is Rune (he's so silly but also such a sexy boy). I also like Burry who is so friendly and I think it would be the best cuddler of the pack, and I think I can change Teak's mind (at least I hope Luke can change his mind) on humans.
I agree with the thing said by Nirbak, I have not seen many VN with anatomically correct bits on the furry characters and I really love you choose this way as the main one (and I agree with Thistle, knots are the best :D)
I love not only how you draw your characters and their expressions, but also the backgrounds (they can do the difference and they really give an added feeling to all the scenes). I also love the humour of the story, and that nice idea of trying all the choices to unlock different scenes.
You are doing an excellent job and I'm looking forward to see more don... dogs xD