A Cog is an item found by clearing each level in Krematoa in Donkey Kong Country 3: Dixie Kong's Double Trouble!. At first, they don't do anything, but when all five Cogs are inserted into Boomer's machine, the device somehow returns Krematoa's volcanic activity and causes Baron K. Roolenstein's Knautilus to rise as well.
- In the Game Boy Advance version of Donkey Kong Country 3, the Cogs are silver instead of gold.
|Items (not barrels)|
|General||Animal Crate • Animal Token • Banana (Bunch) • Crate • End of Stage Target • Extra Life Balloon • Golden Feather • Kannon • Kannonball • K-O-N-G Letters • Mine Cart • No Animal Sign • Skull Cart • Tire • Toboggan • Treasure Chest|
|Coins||Banana Coin • Bear Coin • Bonus Barrel • DK Coin • Kremkoin • Kong Token • Nintendo Coin • Rareware Coin|
|Others||Banana Medal • Cog • Crest|
|Micellaneous||Brothers Bear items|