Manga information: Don't Mess With The Puppy (Yaoi)

After being abandoned by his parents when young, Gyun Heesung grew up in a casino. For the sake of his hyung, who took him in, he doesn't hesitate to put himself in harm's way. However, after an ambush, he finds himself injured and transformed back into his dog form. And upon waking up... "What's with this dirty rag of a pooch?" "Let go - you goddamn bastard!" Gyun Heesung suddenly became the pet dog of a predatory wolf. Though he now lives being showered with wholehearted care and affection, their cohabitation is somewhat unsettling. "Doggy... I don't think I'll eat you up." "C-crazy bastard." A story about the cohabitation between a doggy that wants to run away from a carnivorous wolf and a wolf who's completely smitten by said dog.