Go into a den of viruses with the half breed in the party and get her knocked up until the option "Breed" appears in the menu. Until then it will offer "Digest" for health (and MP?); I mean you can Digest instead of Breed, but I didn't really see a point in doing that.man game is confusing,how you get egg like cold virus egg.i need to make equiment
And for the Squirt go and fight the main body's cells and Knock them up using the half breed of choice.