Expand it even further then that.
For every ___Men, have additional stuff in the Raw files.
Like...
Location of their Home. This should maybe be tied into their Biome, or something. The difference is, these define where in a local area they decide to live, not what the Biome their home is in.
Cavern: They live in an open area, but it's enclosed
Chasm: They like to live in Chasms
Magma: They enjoy living near magma
River: They like living near rivers
Lake: They like living near lakes
Water: They like living near water
Underground: They enjoy living underground
Lava: They enjoy living near lava
Of course you could combine multiple of these. And there should be a REQUIRED tag for some of these. Like for frogmen, water would be required. They would also have a lake tag, meaning they like lakes better then any other type of water, and maybe the underground tag too so they would like living underground more, but the only requirement is they have to live near water.
Also, how they change where they live:
Burrow: They dig tunnels and stuff, and live in them.
Nest: They live in small nests, where they hoard stuff. As in, tiny piles of junk that they defend.
Decorate: They decorate the area they live in with various things, like bones. Maybe additional options for this one, like Webbing, Spikes, Slime, and other decoration.
Room: This one is a tag to define different rooms they would have, if any. Like Hoard, Leader_Room, Nursery, etc.
And the way they are organized:
Loose: Loose organization. Pretty much means they tend to be in the same place, but they don't work together really.
Territorial: They attack each other and anyone else who bothers them.
Groups: They tend to separate into separate groups
Hive: They all work closely together, tending to attack and retaliate as one.
These can be combined, to an extent. Loose and Groups means they form loose groups scattered around. Territorial groups means they form groups that don't like each other. Loose Hive would mean they are more scattered around, but they still act as a group, Territorial Hive would mean a Hive that really doesn't like anything else around, etc.
So, for the Antmen example...
[liVES:UNDERGROUND:REQUIRED]
[liVES:CHASM]
[liVES:CAVERN]
[EFFECTS:BURROW]
[ROOM:LEADER_CHAMBER]
[BEHAVIOR:HIVE]
[BEHAVIOR:TERRITORIAL]
I think that would add a lot, if all the ___Man animals got these tags or something.
Now, the difference between those animals and Kobolds is they wouldn't have any effects on worldgen or anything, they would be considered animals, like a pride of lions.