Given two species, otherwise similar, is color enough to make both merit inclusion?
As ever, it's a judgement call, but I would argue not, in most cases. Usually two creatures differentiated only by colours will merely be subspecies, anyway
What about differences in number and size of a body part (i.e. horns, humps, wattles, or toes)?
Probably not, unless it's a particularly spectacular difference
What about differences in biome?
Consider making a more generalised creature, and giving it extra biomes. Some biomes, like mountains, deserts and tundra need all the variety they can get, however.
Terrestrial versus arboreal?
? I'm not sure where this would be an important distinction.
If there are many similar but differently colored/sized/etc. creatures such that we decide to include only one, should we choose one specific species, or make a generic creature as a meld of all of them?
I tend to try and create a generic creature, but I'll usually have a representative species in mind, even if I name it after the group.
Features:
Should we include parthenogenerators? If so, how?
Can't really be implemented, but DF animals reproduce more like spores than real animals anyway
Since creatures do not live in trees (I think), should we include arboreal creatures?
Animals don't live in trees, unless you get (un?)lucky and the game accidentally spawns a goat on top of a tree. I think they should be included nontheless.
Should we include gliders and water-walkers?
They'll have to be implemented as fliers and swimmers respectively, but I don't think that's too much of a break from reality. I think the enjoyment from having a flying frog probably outways the strangeness of occaisionally seeing it a dozen Z-levels above the trees. There
are updrafts, after all
Basically, should we include creatures whose interesting unique features DF cannot model yet?
I guess it depends how integral they are to the animal, and how approximately they can be replicated. Put it on the list - if it can't be done, it's not the end of the world
Is there any way currently to model diet?
You can get them to kill other animals with [liKES_FIGHTING], attack dwarves, and steal food and drink. That's the best that can be done.
Can we model color variation, as in chameleons and cuttlefish?
Not to my knowledge. You can, however make the tile flash different colours
Can creatures dig, like worms or moles?
Nope. They can be found in caves, or by searching the ground.
Is camouflage possible yet?
With [AMBUSH_PREDATOR]
How about vocalizations?
No. Their vocalizations are a good thing to mention in the PREFSTRING, however
Tags:
Should extinct creatures be considered [MUNDANE]?
Hmmmm. Up for discussion. I would say no, though
Should parrots have [UTTERANCES]?
Heh. Well, wild parrots wouldn't know human speech. They could be given [SLOW_LEARNER] however, and they would slowly devolop conversationalist skills
Can a creature variation delete certain body parts? I know it can swap existing parts (like QUADRUPED with HUMANOID in the example), but can it swap a part with nothing? This would be useful with legless lizards, so they can [APPLY_CREATURE_VARIATION:LIZARD] and then delete the legs.
I think they can, yes
Other:
Should we include tardigrades and other microscopic creatures?
Nah. The entire concept of microscopic creatures (apart from angels) was pretty much unknown in the medieval world. Also, if we included them, they would literally be coating every surface in the game.
What makes something vermin?
That's one for the philosophers, I suppose. It's a very pertinent question actually, and I'll have to think about that myself.
Where will we keep the new [BODY] parts that there surely will be?
Just in a new body.txt file
Should we list color morphs, like the pied raven?
Yeah, they can be implemented, so make a note of them
How will we assign symbols for so many creatures?
Convention is just the first letter of the animal's name. Vermin tend to have their own symbols.
How do genetics work? Are there dominance, codominance, and carriers?
Uh........Oh! Look at the time