So far I've found that the files involving Race is:
assets, explorationregions, laboratory, mainmenu, Mansion, newsexsystem, repeatable_quests, sexdescriptions, slavedialogues, variables.
Within the characters folder: description, races.
I believe there all tied together someway or the other, I tried adding Beastkin and halfkin Mouse race, with this line of code in the Race script (I added the tails and ears, etc, but I cant figure out what im doing wrong... I am not suited for this line of work:
Mousekin = {
bodyshape = ['shortstack'],
description = "Little is known of the origin of Micekin, One rumer is that a lonely alchemist Spent his entire life transmuting feral mice to create his ideal companion. ",
details = "[color=aqua]Racial trait: pregnancy progresses lot quicker. [/color]\n\n[color=yellow]Stat potential: Strength - 1, Agility - 5, Magic - 2, Endurance - 4 [/color]",
skin = ['pale', 'fair', 'olive', 'tan'],
ears = ['mouse_ears'],
tail = ['mouse'],
furcolor = ['white', 'gray', 'brown'],
skincov = ['full_body_fur'],
legs = ['fur_covered'],
arms = ['fur_covered'],
eyecolor = ['blue', 'green', 'amber', 'red'],
height = ['tiny'],
stats = {str_max = 2,
agi_max = 7,
maf_max = 3,
end_max = 4}
},