Normally I'd agree for aliasing it to the same place. However, I think aliasing unguligrade to --> hooves was a bad idea to begin with, considering that even though they all have hooves, it still doesn't change the fact that those hooves are not always visible in the image (which is what the hooves tag is supposed to be reserved for: visible hooves). That's the whole reason why the hooved species' we have aren't actually implicated to the hooves tag. Under twys, something can be an ungulate or unguligrade by species, but not have any hooves visible in the picture because their hooves are off-screen or otherwise blocked from view.
So, based on this, I aliased ungulate to --> mammal. And I went ahead and did it because this same issue was recently discussed in forum #145901, and that went the same way for the same reasons. I did however make sure that the ones under ungulate which also had visible hooves got tagged with the hooves tag as well. It's worth noting that only 3/4ths of what was under there also fit the hooves tag.
Updated by anonymous