The bulk update request #231 is pending approval.

create implication toothless (191) -> how_to_train_your_dragon (166)
create implication night_fury (167) -> how_to_train_your_dragon (166)
create implication light_fury (39) -> how_to_train_your_dragon (166)
create implication nubless (34) -> how_to_train_your_dragon (166)

Reason: So many HTTYD posts not tagged with how_to_train_your_dragon, so I figure a bulk Implication will fix it.