Woof Woof Story: I Told You to Turn Me Into a Pampered Pooch, Not Fenrir!, Vol. 1 (manga)

As corporate slave Routa Okami keels over in the middle of his busy office, he imagines how nice it would have been to live as the pet of some rich family instead of working himself to death. But when a goddess actually grants that wish and brings him back to life as a pampered pooch, Routa realizes he may have gotten more than he bargained for...