The level of ST interaction seems a bit too much, given that it's a mundane player-tamable creature - I'd suggest at least removing the fact that you'll need an ST-Event or overseen interaction to tame one, and make it so that it's readily available through Player-Ran events.
Perhaps, It'd be best to rework the ST Herb and find a different use for it, one that can't be abused by the players - as I can already see it being PG'd by people, given that people have tried to heal a beheading with Tippen's Root before. A more aesthetic-herb would be more interesting and cute, what about glowing flowers to keep in mind with the colourful-poisonous theme to escape or ward off predators?
I love the work that you've put in however, makes me amazed that this is your first creature lore with how thought-out and interesting it is. However, my suggestions remain as that; notices or recommendations that you can choose to follow or not.