I thought this would be one of those things people fix automatically. Like how many of us have nails and cartilege that heals, the fix is known, just not live in vanilla.
(I realise not everyone has looked at the files or is that way knowledgable, just ask for help in one of the little questions threads however and bingo, code snippets and instructions)
Everything in my world has natural novice discipline, from animals to sentients. What they do with it from there is their own lookout through worldgen and regular gameplay. But no-skill or dabbler disc gives rabbit-in-the-headlight behaviour. Why would I want that? Actually...maybe i'll remove Disc from rabbits and deer, some benign prey.
Point is: This game is massively moddable right? We can change and tweak sooo much stuff. Some of us want to play Toady's vision, thats fine, but no harm making fixes he will implement in the immediate future. This is a balance issue that he hasnt gotten around to yet, as he quite rightly hammers the bugs out of this newest generation. Balance your own game
edit:
[NATURAL_SKILL:DISCIPLINE:2]
This goes into the sentient races listed in creature_standard.txt to give natural discipline to goblins, humans, elves etc. Where exactly in the creature definition isnt too critical, stay above the gender [CASTE] definitions though. I normally stick it near the equips tag out of habit. If it has a natural_skill token already put it there. You could place the same code into any creature in the game
(those with RAWs, for instance, I cant fix HFS, which will also behave like a total lemon and cry over the puppy he murders.)