Inu mo Arukeba Fallin' Love

When Ukyo rescues a stray dog, he soon learns that he may have made a rare find. His new dog , who he's named Kuro, can talk! And if that's not crazy enough, soon Kuro is able to magically transform into a human! With his dog now taking the form of a hot man and licking him in various places, what is Ukyo to do?! From the artist of Wild Rock comes Man's Best Friend! Who says you can't teach an old dog new tricks?

(Source: Blu)

Including short stories:
Goldfish Princess, Summer's Here Again, and Pinpoint Lovers.