Some monsters can transform your allies and make them fight against you or use them to their breeding (is this word?) but this can be used at your favor increasing your attributes, skills and genes.
v0.5.60

-Fixed: Pregnancy does not occur on Interaction Menu.

-Fixed: Hermaprodites/Futanaris getting themselves pregnant when they do a sex action on an ally.

-Fixed: Removed invalid sex action in Interaction Menu.