What do you mean by "dominates"? Like Orange Marmalade or like Tokyo Ghoul?
All I can think is Owari no Seraph but too bad it's not yaoi :(
Like Blood Bank do you read it? Its cool
I just skimmed it. Really weird, but funny, lol.
Check out Mori no Koe and West End. I think something like that, especially West End, is what you're looking for. It's not fully translated, though.
I suppose you could also argue Ze, to an extent, fits the description you gave as well.
True (〜￣△￣)〜
Is there a yaoi manga where one species dominates the other? Such as vampires and humans.