About your dog idea, I really wondered why there aren't games like
Spoiled Child, but with a dog.
To me, a dog being adopted while the male owner hates him would be nice. You would gain favours to girls from time to time, like doing tasks (helping clothing, asking for food, etc.). It would be nice a suspicion mechanic, which would increase if you want to corrupt too fast without gaining trust. It could have corruption stuff like showing erection, bathing together, humping, licking, and so on. The concept is somewhat similar to Spoiled Child, that's why I mentioned it, but you got the idea.
I understand there is
Dog Fuck Idol out there but it's mostly a NTR, as well the CGs sometimes don't make much sense, position wise. Don't forget how dogs "can" do it, as well can knot (although this last point would be better at the end of the game imo). I believe a true corruption/trust game as a dog isn't a well explored theme. But I understand it's niche as well, and can or can not be well accepted.
Just personal request, if you ever end doing it, I understand it would be hard to apply it, but a corruption mechanic that would increase the audacity with corruption level would be nice. It's hard to explain, but think of it as a female character at the begining who is afraid to be caught and only does stuff alone at home, and in the end of corruption cycle ends up not being afraid, like being at the other side of the sofa looking and talking to other characters, or being at the other side of the door when they ask her to go dinner, stuff like that. I know I ask too much (sorry about that), but a "not afraid to be caught" is a thing I quite like if well made on dojins and stuff like that, and on your idea I believe it would fit well.
Just I reminder, I'm not complaining about your idea, I will more than happy if the game ends up being fun. Just mentioned the stuff above because an adoption and being careful with the guy at home (that doesn't agree) would be more "realistic". If you still want the divorce stuff you can add it mid-late game, but having a compilation of tasks to force the divorce would be quite fun. Imagine stuff like defending a girl or framing him up, and needing to minor tasks to him as well (like getting newspaper, etc) to be able to reduce suspicion. He doesn't need to be a vile guy towards you, but just a "burden" you need to get rid of.
Pure fucking is out there, gameplay is what would make people thrilled on the game. Take an example on those FemaleProtag RPG's. Some people tend to hate the genre because many lack quality and gameplay. But the genre still has some nice games, the issue is the quantity of non-memorable games that genre has.
I think that's a main reason why mc in bestiality games are human because one of the interesting part of bestiality, in my opinion, is the whole inner thoughts/struggle/morality/evolution of said characters in their relationships with animals, seeing what they think and feel while they do this immoral deed.
Couldn't agree more. That's why I believe it's important to be more like a "quest game" rather than just corrupting, otherwise it would lack gameplay and storywise.