Dwarf Fortress Bug Tracker - Dwarf Fortress
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0000516Dwarf FortressCreaturespublic2010-04-05 13:562010-06-10 21:04
Toady One 
0000516: Hydra body has NECK in addition to 7HEADNECKS, giving them two necks per head
When fighting a hydra and a dragon, the hydra managed to get injuries on its "first neck", "second neck", ..., "seventh neck", and then "neck, first head", "neck, second head", ..., "neck, seventh head".
Allow a dragon to breathe fire on a hydra - the fire damage is usually enough to injure every part of its body, including each pair of necks.
It's possible that the two necks are, in fact, the same body parts, just displayed separately - it's rather difficult to injure only the "neck, Nth head" or "Nth neck" without injuring everything else in the process.
Issue History
2010-04-05 13:56QuietustNew Issue
2010-04-05 13:59FootkerchiefNote Added: 0001205
2010-04-05 14:00FootkerchiefNote Edited: 0001205bug_revision_view_page.php?bugnote_id=0001205#r384
2010-04-05 14:01QloosTag Attached: description
2010-04-05 14:01FootkerchiefSummaryHydras appear to have two necks per head => Hydra body has NECK in addition to 7HEADNECKS, giving them two necks per head
2010-04-08 09:26SirPenguinNote Added: 0002059
2010-04-13 09:23FootkerchiefCategoryCreatures => Typos/Grammar
2010-04-13 10:09smjjamesNote Added: 0003281
2010-04-13 15:22FootkerchiefTag Attached: PROBABLE QUICK FIX
2010-04-28 09:49smjjamesTag Attached: quick fix
2010-05-05 21:28FootkerchiefTag Detached: quick fix
2010-05-11 11:34QuietustNote Added: 0006555
2010-05-11 11:54FootkerchiefNote Added: 0006556
2010-05-11 12:16derigoNote Added: 0006557
2010-06-07 21:53FootkerchiefCategoryTypos/Grammar => Creatures
2010-06-09 00:36Toady OneNote Added: 0007973
2010-06-09 00:36Toady OneStatusnew => resolved
2010-06-09 00:36Toady OneFixed in Version => 0.31.06
2010-06-09 00:36Toady OneResolutionopen => fixed
2010-06-09 00:36Toady OneAssigned To => Toady One
2010-06-09 06:45Toady OneStatusresolved => closed
2010-06-09 07:56FootkerchiefStatusclosed => resolved
2010-06-10 21:04FootkerchiefTag Detached: Probable Quick Fix

2010-04-05 13:59   
(edited on: 2010-04-05 14:00)
Looks like it's because their BODY has the standard NECK in addition to 7HEADNECKS. Nice catch.

2010-04-08 09:26   
Just wanted to add that this also might be the reason hydras are currently a little easier to kill than they should be. Though they can survive a head cut off, they often bleed out. This bug effectively doubles the chances of cutting a neck which causes (I'm pretty sure) heavy bleeding/a mortal wound
2010-04-13 10:09   
I guess that would explain why they seem to have duplicate body parts when they show up in the wounds.
2010-05-11 11:34   
Looking back, this bug has been present since the very first version of Dwarf Fortress ever released - the raws from v0.21.93.19a have the same 7HEADNECKS + NECK.
2010-05-11 11:54   
Man that's depressing.
2010-05-11 12:16   
rofl. Amazing.
Toady One   
2010-06-09 00:36   
There's the long, long hydra necks, and then there's the nervous tissue/boney internal stuff up where the human head connects (neck is internal for humans, though it could have skin or not or whatever, there are various problems). I remember seeing this before and not taking it out, but I think it's confusing and that things need to be renamed if they go back in, yeah. The human neck would also need to be redone. In any case, the NECK tag is out now.