See my edits above, all color token errors are fixed with those two changes.
Littersize is a caste specific token, best move it to the female dogs only. It seems you took RL values for those, which is... questionable. Things like [LITTERSIZE:10:13] might be realistic for Dalmatians, but ingame it will lead to a dogs-plosion. I would add either add MULTIPLE_LITTER_RARE or turn the values down to something less FPS-harming, like 1-4.
How do you feel about creature_variations for them, like GIANT_DOG_X with mount tags?
You can also add cool stuff like the cats that bump into/clean things, with dog-like abilities like tail-wagging as a greeting.
[CAN_DO_INTERACTION:CLEANING]
[CDI:ADV_NAME:Clean]
[CDI:USAGE_HINT:CLEAN_SELF]
[CDI:USAGE_HINT:CLEAN_FRIEND]
[CDI:BP_REQUIRED:BY_CATEGORY:TONGUE]
[CDI:VERB:lick:licks:lick each other]
[CDI:CAN_BE_MUTUAL]
[CDI:TARGET:A:SELF_ALLOWED:TOUCHABLE]
[CDI:TARGET_RANGE:A:1]
[CDI:MAX_TARGET_NUMBER:A:1]
[CDI:WAIT_PERIOD:10]
[CAN_DO_INTERACTION:BP_BUMP]
[CDI:ADV_NAME:Head bump]
[CDI:USAGE_HINT:GREETING]
[CDI:BP_REQUIRED:BY_CATEGORY:HEAD]
[CDI:VERB:head-bump:head-bumps:bump heads]
[CDI:CAN_BE_MUTUAL]
[CDI:TARGET:A:SELF_ONLY]
[CDI:TARGET:B:TOUCHABLE]
[CDI:TARGET_RANGE:B:1]
[CDI:MAX_TARGET_NUMBER:B:1]
[CDI:WAIT_PERIOD:20]
ROOT_AROUND might be interesting for ADV mode AI, especially smaller dogs/vermin hunters.
I've seen you've already added a PREFSTRING for each, but there can be several, and they can be a bit longer and more descriptive.
You could give them SOUNDs for adv mode, like: (just a copied example, of course dogs won't whistle ^^)
[SOUND:ALERT:200:1000:VOCALIZATION:bark:barks:a resounding bark]
[SOUND:PEACEFUL_INTERMITTENT:200:10000:VOCALIZATION:whistle:whistles:deep whistling]
[SOUND:PEACEFUL_INTERMITTENT:50:10000:VOCALIZATION:grunt:grunts:a loud grunt]
[SOUND:PEACEFUL_INTERMITTENT:5:10000:VOCALIZATION:purr:purrs:a deep purr]
[SOUND:PEACEFUL_INTERMITTENT:50:10000:NONE:click:clicks:a loud click]
TRANCES could be cool for the more aggressive dogs.
Tiny, cowardly dogs that shouldnt fight could get FLEEQUICK.
Edit: PS:
https://en.wikipedia.org/wiki/List_of_cat_breeds