Dogadon

"Oh, it was awful master. Those horrible Kongs threw nasty barrels at me that went bang. Knocked me into the lava, they did. And I've singed both my wings."

- Dogadon

Dogadon is a giant dragon with insect-like wings that is fought as a boss twice in Donkey Kong 64.

Angry Aztec
Dogadon is first encountered as the boss of Angry Aztec. Diddy Kong must feed 120 bananas to Scoff and Troff to open the boss door. Inside, a brief cutscene of Diddy being pestered by a dragonfly is shown; Diddy stomps on the dragonfly and squashes it flat, angering Dogadon, who then emerges from the lava.

Dogadon begins the battle by flying around the room, spitting fireballs that Diddy must avoid. After a while, Dogadon will land to rest on the stone platform, where Diddy must throw a TNT Barrel at him to knock the dragon into the sea of lava around the platform. Dogadon will burst out of the lava and start shooting even move fireballs at a faster rate.

After Diddy hits Dodagon with three TNT Barrels, the dragon will fall into the lava for the last time, and gives up the boss key he was guarding.

Fungi Forest
Dogadon returns later in the game as the boss of Fungi Forest, where Chunky must battle him after feeding Scoff and Troff 300 bananas of any color to open the boss door. As Chunky enters the Fungi Forest boss door and fearfully looks around, Dogadon appears in front of the Kong, horrifying him into begging for mercy.

The first phase of this battle starts out similar; Chunky must dodge Dogadon's fireballs and hit him with TNT Barrels when he lands to rest. After one hit, Dodagon will start creating shockwaves that Chunky must jump over. After two hits with TNT Barrels, Dogadon will send a wave of fire at Chunky; the only way to avoid it is to hang on the ledge.

Returning to the stone platform, Dogadon will angrily begin to stomp on it, causing it to start sinking, effectively turning the boss battle into a timed fight. He will then resume his fireball barrage, and Chunky must quickly hit him with another TNT Barrel. Instead of knocking Dodagon into the lava, however, a Hunky Chunky Barrel will now appear where the TNT Barrel was.

Hunky Chunky must use the Barrel's transforming ability to pummel Dodagon into submission before the effects of the transformation wear off, at which point Chunky must repeat the process of hitting the dragon with TNT Barrels to make the Hunky Chunky Barrel to reappear. If the player takes too long to defeat Dogadon, the stone platform will vanish, causing Chunky to fall into the lava and forcing them to restart the boss fight. Defeating the dragon causes him to relinquish his second boss key. Later, Dodagon is seen speaking with King K. Rool, explaining that he lost to Chunky while nearly bursting into tears, and then says he is going to lie down. While it is unknown what happened to Dodagon following K. Rool's defeat, he is seen in the secret ending, where he scares Diddy but ends up getting scared by a small yellow Gnawty.

Trivia

 * Dogadon normally spawns Boss Key #2 in Angry Aztec and Boss Key #5 in Fungi Forest. However, by using a glitch where Dogadon takes damage from a TNT barrel (via the fist shake touching it) at the same time it hits the kong, it immediately tricks the boss into thinking you defeated the Fungi Boss, even during the Aztec Boss. This is because the Fungi Forest Boss was made before Angry Aztec. When it came around to making the Angry Aztec Boss, the developers carried all the triggers from the Fungi Forest Boss to the Angry Aztec Boss, including the death trigger.
 * If you use this method on the Angry Aztec Boss, it gives you Key 5, and won't remove the Troff 'n' Scoff portal in either level. From here, if you performed the glitch in Angry Aztec, you can re-enter the Troff 'n' Scoff portal, and fight the boss normally which will give you Key 2.
 * If you perform the glitch, re-enter the portal, and perform the glitch again, it will kick you out of the fight before it spawns Key 5.