I've been thinking about this one for a while. Toriel and other boss monster characters from Undertale like Asgore and Asriel usually get tagged as goats or caprine creatures. But do they really look like goats? They have two horns and long, floppy ears, which some goats have... but they also have paws and fangs. Their heads aren't particularly goat-shaped either. They usually have wider heads shorter and smaller snouts while actual goats tend to have relatively slim heads with taller and longer snouts.
I'm curious how other people feel about it. Personally when I search for caprine creatures Toriel and related characters aren't really the thing I have in mind. There is a tag for Toriel's species (boss_monster_(undertale)) but it is often combined with the caprine and goat tags, which I feel limits its utility.
My ideal situation would be on-model boss monster characters recieve the boss_monster_(undertale) tag alone and only recieve the caprine or goat tag if they actually have goat-like features beyond the official depiction (e.g. hooves instead of paws, no fangs, more goat-like head shape). Let me know what you think of it.