A couple more things.
Are you using accelerated DF? I noticed some of your creature material definitions were wonky, and accelerated or pulling a creature from another mod that incorporates accelerated might explain the discrepancies.
Anyways, I don't have a clue as to why the bite attack is marfed up, and only for the female caste. For your edification, here is how I would lay out all the tokens for this creature. Note: I removed HUMANOID_JOINTS from the body definition because the humanoid joint plan does not line up with all of your centaur body parts. You could make a new joint plan if necessary, but really the joint plans aren't super important (they are fun in wrestling though). Also, I changed the TENDONS/LIGAMENTS/BLOOD/PUS to use local creature mats, as is normal. These are usually changed to CREATURE_MAT:ANIMAL in accelerated (which is why I think you might be using it).
[CREATURE:CENTAUR]
[DESCRIPTION:An otherwise humanoid being thats lower body is replaced with that of a horse.]
[NAME:centaur:centaurs:centaur]
[CASTE_NAME:centaur:centaurs:centaur]
[CREATURE_TILE:'E'][COLOR:6:1:1]
[INTELLIGENT][LIKES_FIGHTING]
[CANOPENDOORS]
[BONECARN][NO_DRINK][NO_EAT]
[PREFSTRING:strength]
[CHILD:1][GENERAL_CHILD_NAME:centaur foal:centaur foals]
[DIURNAL]
[HOMEOTHERM:10068]
[SWIMS_INNATE][SWIM_SPEED:2500]
[MUNDANE]
[CASTE:FEMALE]
[FEMALE]
[BODY:CENTAUR:2EYES:2EARS:NOSE:2LUNGS:HEART:GUTS:ORGANS:THROAT:NECK:SPINE:BRAIN:SKULL:5FINGERS:MOUTH:TONGUE:FACIAL_FEATURES:TEETH:RIBCAGE]
[MULTIPLE_LITTER_RARE]
[CASTE:MALE]
[MALE]
[BODY:CENTAUR:2HEAD_ANTLER:2EYES:2EARS:NOSE:2LUNGS:HEART:GUTS:ORGANS:THROAT:NECK:SPINE:BRAIN:SKULL:5FINGERS:MOUTH:TONGUE:FACIAL_FEATURES:TEETH:RIBCAGE]
[SELECT_CASTE:ALL]
[BODY_DETAIL_PLAN:STANDARD_MATERIALS]
[USE_MATERIAL_TEMPLATE:HOOF:HOOF_TEMPLATE]
[USE_MATERIAL_TEMPLATE:HORN:HORN_TEMPLATE]
[USE_MATERIAL_TEMPLATE:NAIL:NAIL_TEMPLATE]
[USE_MATERIAL_TEMPLATE:SINEW:SINEW_TEMPLATE]
[USE_MATERIAL_TEMPLATE:BLOOD:BLOOD_TEMPLATE]
[USE_MATERIAL_TEMPLATE:PUS:PUS_TEMPLATE]
[BODY_DETAIL_PLAN:STANDARD_TISSUES]
[USE_TISSUE_TEMPLATE:HOOF:HOOF_TEMPLATE]
[USE_TISSUE_TEMPLATE:HORN:HORN_TEMPLATE]
[USE_TISSUE_TEMPLATE:NAIL:NAIL_TEMPLATE]
[USE_TISSUE_TEMPLATE:EYEBROW:EYEBROW_TEMPLATE]
[USE_TISSUE_TEMPLATE:EYELASH:EYELASH_TEMPLATE]
[BODY_DETAIL_PLAN:VERTEBRATE_TISSUE_LAYERS:SKIN:FAT:MUSCLE:BONE:CARTILAGE]
[SELECT_TISSUE_LAYER:HEART:BY_CATEGORY:HEART]
[PLUS_TISSUE_LAYER:SKIN:BY_CATEGORY:THROAT]
[TL_MAJOR_ARTERIES]
[BODY_DETAIL_PLAN:BODY_HAIR_TISSUE_LAYERS:HAIR]
[BODY_DETAIL_PLAN:STANDARD_HEAD_POSITIONS]
[BODY_DETAIL_PLAN:HUMANOID_HEAD_POSITIONS]
[BODY_DETAIL_PLAN:HUMANOID_RIBCAGE_POSITIONS]
[TISSUE_LAYER:BY_CATEGORY:HEAD:EYEBROW:ABOVE:BY_CATEGORY:EYE]
[TISSUE_LAYER:BY_CATEGORY:EYELID:EYELASH:FRONT]
[TISSUE_LAYER:BY_CATEGORY:FINGER:NAIL:FRONT]
[TENDONS:LOCAL_CREATURE_MAT:SINEW:200]
[LIGAMENTS:LOCAL_CREATURE_MAT:SINEW:200]
[BLOOD:LOCAL_CREATURE_MAT:BLOOD:LIQUID]
[PUS:LOCAL_CREATURE_MAT:PUS:LIQUID]
[CREATURE_CLASS:GENERAL_POISON]
[GETS_WOUND_INFECTIONS]
[GETS_INFECTIONS_FROM_ROT]
[HAS_NERVES]
[BODY_SIZE:0:0:100000]
[BODY_SIZE:1:0:200000]
[BODY_SIZE:2:0:500000]
[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]
[ATTACK:KICK:BODYPART:BY_CATEGORY:HOOF_FRONT]
[ATTACK_SKILL:STANCE_STRIKE]
[ATTACK_VERB:kick:kicks]
[ATTACK_CONTACT_PERC:100]
[ATTACK_PRIORITY:MAIN]
[ATTACK_FLAG_WITH]
[ATTACK:KICK:BODYPART:BY_CATEGORY:HOOF_REAR]
[ATTACK_SKILL:STANCE_STRIKE]
[ATTACK_VERB:kick:kicks]
[ATTACK_CONTACT_PERC:100]
[ATTACK_PRIORITY:MAIN]
[ATTACK_FLAG_WITH]
[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:SECOND]
[ATTACK_FLAG_CANLATCH]
[ATTACK:PUNCH:BODYPART:BY_TYPE:GRASP]
[ATTACK_SKILL:GRASP_STRIKE]
[ATTACK_VERB:punch:punches]
[ATTACK_CONTACT_PERC:100]
[ATTACK_FLAG_WITH]
[ATTACK_PRIORITY:SECOND]
[PERSONALITY:ANGER:25:75:100]
[PERSONALITY:IMMODERATION:50:75:100]
[PERSONALITY:EXCITEMENT_SEEKING:0:60:100]
[PERSONALITY:CHEERFULNESS:0:40:90]
[PERSONALITY:ALTRUISM:0:25:50]
[PERSONALITY:MODESTY:0:40:90]
[PERSONALITY:SYMPATHY:0:25:50]
[SET_TL_GROUP:BY_CATEGORY:ALL: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: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:BLACK:1]
[TLCM_NOUN:eyes:PLURAL]
[DOES_NOT_EXIST]
Edit: Found an error, might explain the female only problem
There is a double colon in the Body definition
BODY: <snip> :5FINGERS::MOUTH:TONGUE:FACIAL_FEATURES:TEETH:RIBCAGE
right there before the MOUTH entry. Remove that and see if it fixes everything up.