Implicating centaur → human
Link to implication

Reason:

centaurs are half-human, half-horses. 'taurs are quadrapedal hybrids of any two other species, but centaurs are very specific on that.

Not the way the tag is currently used.

The principle of least surprise says "hell no". If I'm looking for humans and find centaurs (without at least one human in the image), I'm going to be fucking astonished. And angry.

Snowy said:
The principle of least surprise says "hell no". If I'm looking for humans and find centaurs (without at least one human in the image), I'm going to be fucking astonished. And angry.

They already imply horse and taur. They are horse/human hybrids. Looking for horse and suddenly you see a half-human, would you be "fucking astonished and angry"? no, because you know they're half-horse. Common sense there.