So "kid" has this explanation: *A human shota or loli. For cubs, don't use this tag.* Okay.
BUT, it's implied by "solo kid", which is implied by "solo boy". However "boy" has the explanation *A young/cute looking male*. No mention of species here, and we already have "shotacon" for young human males... So here we have this situation where adding the species-neutral "solo boy" adds "solo kid" and "kid", even though those are meant for humans only... Right?