The bulk update request #231 is pending approval.

create implication toothless (166) -> how_to_train_your_dragon (143)
create implication night_fury (144) -> how_to_train_your_dragon (143)
create implication light_fury (38) -> how_to_train_your_dragon (143)
create implication nubless (33) -> how_to_train_your_dragon (143)

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