Well, for starters, Armok doesn't exist. You must be thinking of [ADJECTIVE][NO_ART_NOUN], the creator deity of [NOUN][PHRASE].
Anyway, the only thing unique about dwarves, aside from some attributes and a few personality things that don't make much difference until after the Personality Rewrite, the only thing that really matters is that they have TRANCES (which also makes them mood), and 60k size.
Attributes unfortunately don't matter nearly as much as skills do right now, and since most animalmen don't even have any attributes given to them at all (or rather, all of them have default attributes), then the differences between the animalmen are essentially restricted to maxage and size.
Sure, we could ask Toady for caste-level body-templatable clothing tokens... but that's another suggestion entirely, and I fully support making it (if it hasn't already been made).
Which was my whole point - these sorts of things rely upon other suggestions to be implemented beforehand.
CAN_READ is not a token, by the way. Reading is a skill, and while it might be possible to make creatures innately read or possibly even theoretically impossible to read through use of the caste-level skill tokens, those aren't being used in such a way right now.
Digging is not a creature-level concept right now, either (barring skill tokens being used in a way they aren't right now, again), it's a civ-level token, so again, anyone who joins a dwarf civ is going to immediately become capable of dwarven steel manufacture, and have access to all other civ-level knowledge.
To get onto the "well that's how it should be", with lizardmen not being able to "dig as well"... once again, you're not answering the important question: Why shouldn't they?
Why can't a lizardman dig as well as a dwarf can dig if they are members of a dwarf civilization? Unless there is some sort of physiological or deeply ingrained psychological problem with them not being able to swing a pick in a way like how a dwarf does if a dwarf taught him how to do that digging, why wouldn't a lizardman learn to dig just as well as a dwarf does?
Why shouldn't a lizardman know how to make steel if a dwarf shows him how? Why shouldn't a lizardman start making =steel breastplates= with the best of them?
What you would have to justify is some sort of actual racial inferiority. You need to explain why a lizardman will never be able to understand how to pound a bar of steel with a hammer to make it sharp the same way a dwarven weaponsmith will be able to understand it, no matter how tutored in the arts of weaponsmithing he/she may be by dwarves. What justifies that?
The rest, after that, is all culture, and how cultures interact, and those are the very things that I am trying to say are the most important aspects.
So what if it takes a lot of thought? This is the suggestions forums. Anything that DOES get implemented is going to get implemented only after a few years and dozens of threads on the subject with hundreds or even thousands of posts. THINKING or conversing are not the bottlenecks to ideas in DF. If there's one thing we can do, it's hash out ideas as thoroughly as we need to before any action is taken upon them.