| Pokedex Entries: |
| Red | A bird that makes up for its poor flying with its fast foot speed. Leaves giant footprints. |
| Blue |
| Yellow | Its short wings make flying difficult. Instead, this Pokémon runs at high speed on developed legs. |
| Gold | By alternately raising and lowering its two heads, it balances itself to be more stable while running. |
| Silver | It races through grassy plains with powerful strides, leaving footprints up to four inches deep. |
| Crystal | It lives on a grassy plain where it can see a long way. If it sees an enemy, it runs away at 60 mph. |
| Ruby | DODUO's two heads never sleep at the same time. Its two heads take turns sleeping, so one head can keep watch for enemies while the other one sleeps. |
| Sapphire | DODUO's two heads contain completely identical brains. A scientific study reported that on rare occasions, there will be examples of this POKéMON possessing different sets of brains. |
| Emerald | Even while eating or sleeping, one of the heads remains always vigilant for any sign of danger. When threatened, it flees at over 60 miles per hour. |
| FireRed | A two-headed POKéMON that was discovered as a sudden mutation. It runs at a pace of over 60 miles per hour. |
| LeafGreen | A bird that makes up for its poor flying with its fast foot speed. Leaves giant footprints. |
| Diamond | The brains in its two heads appear to communicate emotions to each other with a telepathic power. |
| Pearl |
| Platinum | The brains in its two heads appear to communicate emotions to each other with a telepathic power. |
| Stadium 1 | A POKéMON with two heads. More skilled at running than flying, it is capable of racing at speeds over 60 mph. |
| Stadium 2 | By alternately raising and lowering its two heads, it balances itself to be more stable while running. |
