Changes

Stand right in front of King Dodongo's mouth, whip out your first bomb when he opens his mouth and lob it in. Get out a Deku Stick and jump-attack him using Z-targeting. Stand aside while he does his roll attack; then repeat. Your second attack should kill him.

Stand right in front of King Dodongo's mouth, whip out your first bomb when he opens his mouth and lob it in. Get out a Deku Stick and jump-attack him using Z-targeting. Stand aside while he does his roll attack; then repeat. Your second attack should kill him.