Fire Fang is the only attack that can damage Wondertomb or Wondereye.
Mind=Blown
In Red, Blue and Yellow, there was only one Dragon move, Dragon Rage, which deals set damage (40 HP), so Dragon's weakness to Dragon never actually came into account despite being written into the type chart in the instruction booklet.
Wait! I have more!
Somewhat similarly, while the R/B/Y type chart also truthfully tells you that Ghost is only weak to itself, the only Ghost attack that deals variable damage is Lick, with a base damage of 20 that makes it rather unimpressive as a super effective attack.
But that's not all!
Speaking of the R/B/Y type chart and the Ghost type, a lot of people missed the fact that in the original games, Psychic was immune to Ghost, not weak to it. This misunderstanding was propagated by the anime, which had a special subplot revolving around getting Ash a Haunter to beat Sabrina, when a Haunter would have been a horrible choice (not only should Ghost attacks not affect her Pokémon at all, but being partly Poison-type, Haunter would be weak to Psychic attacks).
I'm not done yet!
In the first-generation games, attacks using a special damage formula, such as Seismic Toss, Sonicboom, Dragon Rage, etc., ignored the type chart completely, including immunities.
One more!
The only possible starter triangles (i.e. three types that are weak to one another in a rock-paper-scissors fashion and the same with resistances in reverse) other than the traditional Fire/Water/Grass are Rock/Fighting/Flying, Fire/Rock/Steel and Grass/Poison/Ground. (Before you send me an error report about it, NO, DARK/PSYCHIC/FIGHTING IS NOT A TYPE TRIANGLE. Dark is IMMUNE to Psychic)