Use a dichotomous classification key.
A dragon type's weakness is, believe it or not, is dragon type.
Dragon type Pokemon are weak to dragon type and ice type attacks.
Dragon type is a supereffective type against dragon type
Steel-type and Dragon-type moves are supper effective on dragon-type Pokemon :)
Ice and Dragon type itself is strong against Dragon.
Dragon type moves are only super effective against Dragon type Pokemon.
Dragon type Pokemon are weak against Ice, Dragon, and Fairy type moves.
Dragon, Fairy and Ice-type moves. Fairy Pokémon are immune to Dragon.
Dragon and Ice Types
use a dragon type move on dragon it's most effective.
Dragon type is good to Dragon type. I think it is more like water or grass. I am no sure Ice?! Im not the guy above: Dragon and Ice are super effective against Dragon type Pokemon
A Dark Dragon Pokemon takes double damage from Fighting, Ice, Bug and Dragon moves.