If I remember well, the seme has lost his dog so the uke offered to be his dog but the seme takes that on a sexual way.
The seme had black hair , and (maybe?) the dog was just a excuse to be with the uke.
The uke was blond and popular I think...
And they are neighbors or childhood friends

And in the end (if I am not wrong):

the uke was saved by the seme because he offered to be on the place of the uke and when they are beginning(a rape I think or a fight) bang the uke transforms on a dog like crazy person (I mean : fangs and scary face! no dog ears,tail,body...)

I just loved and can't find it again 😢

here is a image that kind of resembles the uke ? 😕 Or maybe it's from the manga but what yaoi it's the image from?( I wanna know that too)
[url=http://www.japanator.com/elephant/ul/6996-yaoi-smut.jpg]
I may have mixed a little because I read a LOT , like 10 or 15 per day (mangas not pages)

Sorry for the english, I am brazilian 🤣

it sounds like i've read that manga..i don't know if this is wat ur looking for..but heres the link..
http://www.mangaupdates.com/series.html?id=3274

"Your words cut deeper than a knife.."

This belongs in the Yaoi/Yuri Topic.

Remainds me of Tonari ni Kimi no Nukumori wo by Ootsuki Miu..kinda..

Sekai wa minikuidesu..shika shi! Yūjō, yūki, tsuyo-sa wa ikinokoranakereba narimasen..Tiruendo!

Sorry Dafat-MKII it's my first post so i did not know. Forgive me 😛
vampiresfawkingrawk and
yuuki456
Neither one but I am interessed , I will read them later. Thank you 🤣