@Zubb2
I looked through the ArmourdDog and was going to bring a few things to your attention, but I kept running into things (some of which I couldn't easily explain). So I've edited the creature to what I figured you'd want it to be with annotations to do my explaining for me.
[OBJECT:CREATURE]
[CREATURE:ARMOURDDOG]
[DESCRIPTION:A medium-sized highly social armourd dwarven killing machine.]
[NAME:armourd dog:armourd dogs:armourd dog]
[CASTE_NAME:armourd dog:armourd dogs:armourd dog]
[CREATURE_TILE:'m'][COLOR:6:0:0]
[PETVALUE:100][NATURAL]
[LARGE_ROAMING]
[COMMON_DOMESTIC][TRAINABLE][PET][NOPAIN]----NOPAIN has no underscore
[BONECARN]
[PREFSTRING:loyalty]----as Reudh said
[PREFSTRING:slaughter]
[BODY:QUADRUPED:TAIL:2EYES:2EARS:NOSE:2LUNGS:HEART:GUTS:ORGANS:THROAT:NECK:SPINE:BRAIN:SKULL:4TOES_FQ:4TOES_RQ:MOUTH:GENERIC_TEETH_WITH_LARGE_EYE_TEETH:RIBCAGE]
[BODYGLOSS:PAW]
[BODY_DETAIL_PLAN:STANDARD_MATERIALS]----A bunch of materials are put in the creature, you can find them in b_detail_plan_default
[BODY_DETAIL_PLAN:STANDARD_TISSUES]----A bunch of tissues are put in the creature, you can find them in b_detail_plan_default
[BODY_DETAIL_PLAN:BODY_HAIR_TISSUE_LAYERS:HAIR]----Noticed it in Sphalerite's post in your thread, and figured a dog needs fur
[SELECT_TISSUE:SKIN]----This changes the tissue material but keeps everything dealing with skin
[TISSUE_MATERIAL:LOCAL_CREATURE_MAT:INORGANIC_IRON]
[BODY_DETAIL_PLAN:VERTEBRATE_TISSUE_LAYERS:SKIN:FAT:MUSCLE:BONE:CARTILAGE]----Must be put after tissues and materials are defined or they don't exist(also edited typo as Reudh pointed out)
[CREATURE_CLASS:GENERAL_POISON]
[BODY_SIZE:0:0:1000]
[BODY_SIZE:1:0:12500]
[BODY_SIZE:2:0:30000]
[BODY_APPEARANCE_MODIFIER:LENGTH:90:95:98:100:102:105:110]
[BODY_APPEARANCE_MODIFIER:HEIGHT:90:95:98:100:102:105:110]
[BODY_APPEARANCE_MODIFIER:BROADNESS:90:95:98:100:102:105:110]
[MAXAGE:10:20]
[ATTACK:BITE:CHILD_BODYPART_GROUP:BY_CATEGORY:HEAD:BY_CATEGORY:TOOTH]
[ATTACK_SKILL:BITE]
[ATTACK_VERB:bite:bites]
[ATTACK_CONTACT_PERC:100]
[ATTACK_PENETRATION_PERC:100]
[ATTACK_FLAG_EDGE]
[ATTACK_PRIORITY:MAIN]
[ATTACK_FLAG_CANLATCH]
[ATTACK:SCRATCH:CHILD_TISSUE_LAYER_GROUP:BY_TYPE:STANCE:BY_CATEGORY:ALL:NAIL]
[ATTACK_SKILL:STANCE_STRIKE]
[ATTACK_VERB:scratch:scratches]
[ATTACK_CONTACT_PERC:100]
[ATTACK_PENETRATION_PERC:100]
[ATTACK_FLAG_EDGE]
[ATTACK_PRIORITY:SECOND]
[CHILD:1]
[GENERAL_CHILD_NAME:pup:puppies]----As Reudh said
[DIURNAL]
[HOMEOTHERM:10070]
[MUNDANE]
[CASTE:FEMALE]
[FEMALE]
[CASTE:MALE]
[MALE]
##---I'm not messing with anything below here. My appearance modding is terrible, but something seems off with the paw/toe selection.---###
[SELECT_CASTE:ALL]
[SET_TL_GROUP:BY_CATEGORY:BODY_UPPER:HAIR]
[PLUS_TL_GROUP:BY_CATEGORY:BODY_LOWER:HAIR]
[PLUS_TL_GROUP:BY_CATEGORY:LEG_FRONT:HAIR]
[PLUS_TL_GROUP:BY_CATEGORY:LEG_REAR:HAIR]
[TL_COLOR_MODIFIER:BLACK:1:BROWN:1:WHITE:1:GRAY:1:LIGHT_BROWN:1:DARK_BROWN:1:TAN:1:AUBURN:1:CHESTNUT:1:SLATE_GRAY:1:CREAM:1:CINNAMON:1:BUFF:1:BEIGE:1:CHOCOLATE:1:CHARCOAL:1:ASH_GRAY:1:RUSSET:1:IVORY:1:FLAX:1:PUMPKIN:1:GOLD:1:GOLDEN_YELLOW:1:GOLDENROD:1:COPPER:1:SAFFRON:1:AMBER:1:MAHOGANY:1:OCHRE:1:PALE_BROWN:1:RAW_UMBER:1:BURNT_SIENNA:1:BURNT_UMBER:1:SEPIA:1:DARK_TAN:1:PALE_CHESTNUT:1:DARK_CHESTNUT:1:TAUPE_PALE:1:TAUPE_DARK:1:TAUPE_SANDY:1:TAUPE_GRAY:1:TAUPE_MEDIUM:1:ECRU:1]
[TLCM_NOUN:hair:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:EAR:HAIR]
[TL_COLOR_MODIFIER:BLACK:1:BROWN:1:WHITE:1:GRAY:1:LIGHT_BROWN:1:DARK_BROWN:1:TAN:1:AUBURN:1:CHESTNUT:1:SLATE_GRAY:1:CREAM:1:CINNAMON:1:BUFF:1:BEIGE:1:CHOCOLATE:1:CHARCOAL:1:ASH_GRAY:1:RUSSET:1:IVORY:1:FLAX:1:PUMPKIN:1:GOLD:1:GOLDEN_YELLOW:1:GOLDENROD:1:COPPER:1:SAFFRON:1:AMBER:1:MAHOGANY:1:OCHRE:1:PALE_BROWN:1:RAW_UMBER:1:BURNT_SIENNA:1:BURNT_UMBER:1:SEPIA:1:DARK_TAN:1:PALE_CHESTNUT:1:DARK_CHESTNUT:1:TAUPE_PALE:1:TAUPE_DARK:1:TAUPE_SANDY:1:TAUPE_GRAY:1:TAUPE_MEDIUM:1:ECRU:1]
[TLCM_NOUN:ears:PLURAL]
[SET_TL_GROUP:BY_CATEGORY:TAIL:HAIR]
[TL_COLOR_MODIFIER:BLACK:1:BROWN:1:WHITE:1:GRAY:1:LIGHT_BROWN:1:DARK_BROWN:1:TAN:1:AUBURN:1:CHESTNUT:1:SLATE_GRAY:1:CREAM:1:CINNAMON:1:BUFF:1:BEIGE:1:CHOCOLATE:1:CHARCOAL:1:ASH_GRAY:1:RUSSET:1:IVORY:1:FLAX:1:PUMPKIN:1:GOLD:1:GOLDEN_YELLOW:1:GOLDENROD:1:COPPER:1:SAFFRON:1:AMBER:1:MAHOGANY:1:OCHRE:1:PALE_BROWN:1:RAW_UMBER:1:BURNT_SIENNA:1:BURNT_UMBER:1:SEPIA:1:DARK_TAN:1:PALE_CHESTNUT:1:DARK_CHESTNUT:1:TAUPE_PALE:1:TAUPE_DARK:1:TAUPE_SANDY:1:TAUPE_GRAY:1:TAUPE_MEDIUM:1:ECRU:1]
[TLCM_NOUN:tail:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:HEAD:HAIR]
[TL_COLOR_MODIFIER:BLACK:1:BROWN:1:WHITE:1:GRAY:1:LIGHT_BROWN:1:DARK_BROWN:1:TAN:1:AUBURN:1:CHESTNUT:1:SLATE_GRAY:1:CREAM:1:CINNAMON:1:BUFF:1:BEIGE:1:CHOCOLATE:1:CHARCOAL:1:ASH_GRAY:1:RUSSET:1:IVORY:1:FLAX:1:PUMPKIN:1:GOLD:1:GOLDEN_YELLOW:1:GOLDENROD:1:COPPER:1:SAFFRON:1:AMBER:1:MAHOGANY:1:OCHRE:1:PALE_BROWN:1:RAW_UMBER:1:BURNT_SIENNA:1:BURNT_UMBER:1:SEPIA:1:DARK_TAN:1:PALE_CHESTNUT:1:DARK_CHESTNUT:1:TAUPE_PALE:1:TAUPE_DARK:1:TAUPE_SANDY:1:TAUPE_GRAY:1:TAUPE_MEDIUM:1:ECRU:1]
[TLCM_NOUN:head:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:FOOT_FRONT:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:RFTOE1:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:RFTOE2:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:RFTOE3:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:RFTOE4:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:LFTOE1:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:LFTOE2:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:LFTOE3:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:LFTOE4:HAIR]
[TL_COLOR_MODIFIER:BLACK:1:BROWN:1:WHITE:1:GRAY:1:LIGHT_BROWN:1:DARK_BROWN:1:TAN:1:AUBURN:1:CHESTNUT:1:SLATE_GRAY:1:CREAM:1:CINNAMON:1:BUFF:1:BEIGE:1:CHOCOLATE:1:CHARCOAL:1:ASH_GRAY:1:RUSSET:1:IVORY:1:FLAX:1:PUMPKIN:1:GOLD:1:GOLDEN_YELLOW:1:GOLDENROD:1:COPPER:1:SAFFRON:1:AMBER:1:MAHOGANY:1:OCHRE:1:PALE_BROWN:1:RAW_UMBER:1:BURNT_SIENNA:1:BURNT_UMBER:1:SEPIA:1:DARK_TAN:1:PALE_CHESTNUT:1:DARK_CHESTNUT:1:TAUPE_PALE:1:TAUPE_DARK:1:TAUPE_SANDY:1:TAUPE_GRAY:1:TAUPE_MEDIUM:1:ECRU:1]
[TLCM_NOUN:front paws:PLURAL]
[SET_TL_GROUP:BY_CATEGORY:FOOT_REAR:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:RRTOE1:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:RRTOE2:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:RRTOE3:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:RRTOE4:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:LRTOE1:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:LRTOE2:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:LRTOE3:HAIR]
[PLUS_TL_GROUP:BY_TOKEN:LRTOE4:HAIR]
[TL_COLOR_MODIFIER:BLACK:1:BROWN:1:WHITE:1:GRAY:1:LIGHT_BROWN:1:DARK_BROWN:1:TAN:1:AUBURN:1:CHESTNUT:1:SLATE_GRAY:1:CREAM:1:CINNAMON:1:BUFF:1:BEIGE:1:CHOCOLATE:1:CHARCOAL:1:ASH_GRAY:1:RUSSET:1:IVORY:1:FLAX:1:PUMPKIN:1:GOLD:1:GOLDEN_YELLOW:1:GOLDENROD:1:COPPER:1:SAFFRON:1:AMBER:1:MAHOGANY:1:OCHRE:1:PALE_BROWN:1:RAW_UMBER:1:BURNT_SIENNA:1:BURNT_UMBER:1:SEPIA:1:DARK_TAN:1:PALE_CHESTNUT:1:DARK_CHESTNUT:1:TAUPE_PALE:1:TAUPE_DARK:1:TAUPE_SANDY:1:TAUPE_GRAY:1:TAUPE_MEDIUM:1:ECRU:1]
[TLCM_NOUN:rear paws:PLURAL]
[SET_TL_GROUP:BY_CATEGORY:ALL:SKIN]
[TL_COLOR_MODIFIER:BROWN:1:BURNT_UMBER:1:CINNAMON:1:COPPER:1:DARK_BROWN:1:DARK_PEACH:1:DARK_TAN:1:ECRU:1:PALE_BROWN:1:PALE_CHESTNUT:1:PALE_PINK:1:PEACH:1:PINK:1:RAW_UMBER:1:SEPIA:1:TAN:1:TAUPE_PALE:1:TAUPE_SANDY:1]
[TLCM_NOUN:skin:SINGULAR]
[SET_TL_GROUP:BY_CATEGORY:EYE:EYE]
[TL_COLOR_MODIFIER:IRIS_EYE_AMBER:1:IRIS_EYE_AQUA:1:IRIS_EYE_AQUAMARINE:1:IRIS_EYE_ASH_GRAY:1:IRIS_EYE_AUBURN:1:IRIS_EYE_AZURE:1:IRIS_EYE_BLUE:1:IRIS_EYE_BRASS:1:IRIS_EYE_BRONZE:1:IRIS_EYE_BROWN:1:IRIS_EYE_CERULEAN:1:IRIS_EYE_CHESTNUT:1:IRIS_EYE_CHOCOLATE:1:IRIS_EYE_CINNAMON:1:IRIS_EYE_COPPER:1:IRIS_EYE_DARK_BLUE:1:IRIS_EYE_DARK_BROWN:1:IRIS_EYE_DARK_CHESTNUT:1:IRIS_EYE_DARK_GREEN:1:IRIS_EYE_DARK_OLIVE:1:IRIS_EYE_DARK_TAN:1:IRIS_EYE_ECRU:1:IRIS_EYE_EMERALD:1:IRIS_EYE_FERN_GREEN:1:IRIS_EYE_GRAY:1:IRIS_EYE_GREEN:1:IRIS_EYE_JADE:1:IRIS_EYE_LIGHT_BLUE:1:IRIS_EYE_LIGHT_BROWN:1:IRIS_EYE_MAHOGANY:1:IRIS_EYE_MIDNIGHT_BLUE:1:IRIS_EYE_OCHRE:1:IRIS_EYE_OLIVE:1:IRIS_EYE_PALE_BLUE:1:IRIS_EYE_PALE_BROWN:1:IRIS_EYE_PALE_CHESTNUT:1:IRIS_EYE_PERIWINKLE:1:IRIS_EYE_PINE_GREEN:1:IRIS_EYE_RAW_UMBER:1:IRIS_EYE_RUSSET:1:IRIS_EYE_SEA_GREEN:1:IRIS_EYE_SEPIA:1:IRIS_EYE_SKY_BLUE:1:IRIS_EYE_SLATE_GRAY:1:IRIS_EYE_SPRING_GREEN:1:IRIS_EYE_TAN:1:IRIS_EYE_TAUPE_DARK:1:IRIS_EYE_TAUPE_GRAY:1:IRIS_EYE_TAUPE_MEDIUM:1:IRIS_EYE_TAUPE_PALE:1:IRIS_EYE_TAUPE_SANDY:1:IRIS_EYE_TEAL:1:IRIS_EYE_TURQUOISE:1]
[TLCM_NOUN:eyes:PLURAL]
I haven't tested these changes, but I've modded this area pretty extensively.
The Wiki is a valuable resource and the following pages may help in your endeavors:
General Modding Page- Can help jump-start your entrance into modding. A little bit of everything is on the page (except graphic modding).
Creature tokens- Invaluable in creature editing/creation.
Tissue Def tokens- Gives perspective on how creature tissues function. Should not be copied into creature definitions.
Body tokens- Useful in understanding creature form and function. For more advanced or specific projects.