Ok, my very first new creature. Bits and pieces were taken from the giant cave spider, though there are a number of new components that I'd like some more experienced modders to check out.
[BODY:DECAPOD]
[BP:UB:cephalothorax][HEAD][UPPERBODY]
[BP:LB:abdomen][CON:UB][LOWERBODY]
[BP:RA1:right first leg][CON:UB][LIMB][RIGHT]
[BP:LA1:left first leg][CON:UB][LIMB][LEFT]
[BP:RF1:right first foot][CON:RA1][STANCE][RIGHT]
[BP:LF1:left first foot][CON:LA1][STANCE][LEFT]
[BP:RA2:right second leg][CON:UB][LIMB][RIGHT]
[BP:LA2:left second leg][CON:UB][LIMB][LEFT]
[BP:RF2:right second foot][CON:RA2][STANCE][RIGHT]
[BP:LF2:left second foot][CON:LA2][STANCE][LEFT]
[BP:RA3:right third leg][CON:UB][LIMB][RIGHT]
[BP:LA3:left third leg][CON:UB][LIMB][LEFT]
[BP:RF3:right third foot][CON:RA3][STANCE][RIGHT]
[BP:LF3:left third foot][CON:LA3][STANCE][LEFT]
[BP:RA4:right fourth leg][CON:UB][LIMB][RIGHT]
[BP:LA4:left fourth leg][CON:UB][LIMB][LEFT]
[BP:RF4:right fourth foot][CON:RA4][STANCE][RIGHT]
[BP:LF4:left fourth foot][CON:LA4][STANCE][LEFT]
[BP:RA5:right fifth leg][CON:UB][LIMB][RIGHT]
[BP:LA5:left fifth leg][CON:UB][LIMB][LEFT]
[BP:RF5:right fifth foot][CON:RA5][STANCE][RIGHT]
[BP:LF5:left fifth foot][CON:LA5][STANCE][LEFT]
[CREATURE:SPIDER_DREAD]
[NAME:dread spider:dread spiders:dread spider]
[TILE:'S'][COLOR:128:128:128]
[MODVALUE:10]
[EXTRACT:dread spider venom:7:0:0]
[EXTRACT_VALUE:100]
[EXTRACT_PAIN][NATURAL][PET_EXOTIC]
[EXTRACT_ANTIDOTE:dread spider antivenin:7:0:0:100]
[LARGE_ROAMING][FREQUENCY:20][DIFFICULTY:3]
[LARGE_PREDATOR]
[BLOODTYPE:W][CHITIN]
[PETVALUE:2500]
[GRASSTRAMPLE:10]
[CARNIVORE]
[NOPAIN][EXTRAVISION][NOSTUN][NOEMOTION][NOSKULL][NOBONES]
[BUILDINGDESTROYER:1]
[NOFEAR]
[PREFSTRING:many legs]
[PREFSTRING:powerful claws]
[PREFSTRING:ferocious behavior]
[SIZE:11]
[MAXAGE:20:30]
[BODY:DECAPOD:UPPERBODY_PINCERS:HEAD:4EYE:BRAIN:HEART:2LUNGS:GUTS]
[ATTACK:MAIN:BYTYPE:GRASP:snatch:snatches:1:6:GORE][ATTACKFLAG_CANLATCH][ATTACKFLAG_WITH]
[ATTACK:MAIN:BYTYPE:GRASP:snatch:snatches:1:6:GORE][ATTACKFLAG_CANLATCH][ATTACKFLAG_WITH]
[ATTACK:MAIN:BYTYPE:MOUTH:bite:bites:1:6:GORE][ATTACKFLAG_CANLATCH][SPECIALATTACK_INJECT_EXTRACT:50:100]
[FAT:1]
[NO_SLEEP]
[DAMBLOCK:1]
[ALL_ACTIVE]
[POPULATION_NUMBER:3:5]
[BIOME:MOUNTAIN]
[BIOME:DESERT_ROCK]
[HOMEOTHERM:10040]
[STANDARD_FLESH]
Basically, a big, ten legged, crab-clawed monster that likes to hunt down and attack dwarves with a nasty venom that causes pain. (or can it only be paralysis?) I want it to spawn on maps fairly rarely and proceed to attack anything that comes near. What tags do I need to add for that sort of behavior?
Not a critter you want to run into as a fledgling fortress.