I was inspired by @sabarika666 to post some of my cringe from early 00's and hoooboy is it some frickin cringe
I have way more emo cringy ones but those will die with me
Naitetamaruka / As if I'd cry, by Mizushima Shinji, 1968. Unfortunately not really a doggo manga, but info was sparse, there was a dog on the cover, and this book is hideously rare. I finally found a cheaper beat-up copy. Has a cute Tosa in it, but it's not central to the story.