Izuku "My girlfriend likes cuddles"
Everyone in class 1-A were talking about any relationships they either had or were still in when Izuku chimes in that his Girlfriend likes cuddles. Bakugo says under his breath that "Of course rottweiler likes cuddles" which Jirou heard and asked Izuku what Bakugo meant. This leads to showing the class a picture of both him and his girlfriend, who stands at around five feet and ten inches tall with black and brown fur and the appearance of a humanoid rottweiler. Izuku explains that his girlfriend is his neighbor who he met when both him and her were ten and started to date after they turned thirteen.
Mina asks what her quirk is and Izuku tells her that it's simply called rottweiler, and that it works almost exactly like Hound Dogs quirk except it makes her a humanoid rottweiler.
Izuku has a clingy girlfriend whose quirk makes her an anthro rottweiler.