I won't lie, I'm ashamed of it. I'm planning to seek counseling for it (along with other psychological problems I have), but a good counselor is pretty much impossible to find in my area. I've looked into chemical castration a few times, even as a temporary thing, but I hear it's pretty much just used for prostate cancer and serial child molesters (neither of which apply to me, thank goodness). I've even considered surgical castration when I've been in a particularly bad place. I've even attempted suicide over it.
I do understand the OP's confusion about being attracted to male dogs but only to women as far as humans go. For me, what cleared it up was realizing that the idea of actually having sex with a human man doesn't appeal to me, while the idea of having sex with a woman does (as does the idea of having sex with a male OR female dinosaur, horse, etc)