There are different possible 'man turns into dog story'. One could be in a fantasy world where a powerful wizard, angry at a man for some misdeed, casts a spell that turns him into a dog. As a dog, he starts to see the world from a different perspective, with a heightened sense of smell and different social interactions among animals. He might then go on a journey to find a way to break the spell.
I'm not sure which specific 'man turns into dog story' you mean. There could be various fictional tales or even some cultural myths about such a transformation. Maybe it's a unique short story where a man, perhaps through some magic or curse, turns into a dog and has to face a whole new set of challenges and experiences.
Well, without more context, it's difficult to be precise about the 'man turns into dog story'. However, it could be a modern - day fable where a man, in a moment of extreme self - loathing or after some strange scientific experiment gone wrong, gradually transforms into a dog. His transformation could be a metaphor for losing his humanity in some way, and the story could explore how he tries to regain his former self or come to terms with his new form.