Yeah this is for sure NOT what a health dom/sub relationship is supposed to be. Usually with dom/sub there is a lot of pre-negotiation where they talk about their likes, dislikes, limits, safe words, things they want to experiment with, and things they absolutely won't do. Although the dom is the one who dominates, generally it's always the sub who is actually in control. They have the power to stop anything that's happening by using their safe word, no questions asked. That is a hard rule of healthy dom/sub relationships. The safe word is never questions.
So yeah, this manhwa is depicting dom/sub in a creepy/unhealthy way. There are people into pet play, but that is just one kink among a very long list of kinks and not every dom/sub relationship is into that.

Kinda like the manga more than I don’t like it? But like comparing him to a dog is tew much...I don’t know much about it but are real life dom/sub relationships like this? No shade to anybody who may partake in it but I don’t like the idea of that..it’s inhuman and degrading imo