Played for an hour or so without looking up anything and looks to be excellent foundation so far.
Edit: For those people who feel its important to point out that some of this is already available in game and via mod:
Thank you, I have received the message.
Anyway - as my username indicates - onto the suggestions for the developers consideration ...
1) Some more species options like a cow and rabbit might be a decent fit.
2) Each species could get a perk that makes them more unique.
Something like a 10% bonus to the following:
Wolves - Better physical damage.
Felines - Better struggle damage.
Demons - Better lust damage.
Dragons - Physical damage resistance.
Rabbits - Increased litter chance.
Cows - Increased fluid production.
Hybrids - Half bonus from the two species.
Human (or equivalent) - No bonus.
3) Additional toggles and/or Status effects.
Breeder - pregnancy chance of 100% all of the time, Unless already pregnant or something is making the character infertile.
Milk Factory - Constant lactation if breast size is large enough.
Slippery when wet - an area covered in sexual fluids is easier to escape from.
4) Additional options to earn credits.
Fertility clinic sales - Options to sell semen & breast milk.