Straydog Fiance: Re Stray Final Animal Trail Top //free\\

"Tails of Love: The Unlikely Journey of a Stray Dog's Fiancé"

otome isekai or post-apocalyptic BL/romance fantasy

Here is a speculative review of what I believe you're referring to (likely a niche ):

The Stray Dog's Unlikely Rise to the Top of the Food Chain: A Story of Survival and Adaptation

Evidence to collect before the final hearing