Honestly, nearly everything in the combat mod was considered as a result of thinking down the road of trying to deepen our animals a bit. For example, Herd Animals would generally have the Stampede ability, yes, venom from snakes, Wolves - Surround and Destroy specialists, Cats - early withdrawal and power strike (lunge), Skunks - Repel, Tortoises - Armor, Elephant - Overrun, Badgers - DigIn, etc... on and on the list goes. You can point to an animal inspiration throughout nearly the whole set of combat mod tags so far.
I buy into it from a realism perspective, but I'm not sure (in the case of wild animals) it would add anything to gameplay. Once subdued they are defend-only anyway and not really militarily useful (certainly are far more useful constructing things), so I don't see it making any real gameplay difference for the subdued versions. Since players can never control the wild versions, any abilities they get really only have the effect of making them a bit stronger and/or more annoying when hunting them - what strategy does it add?