Well, I presume you are speaking of the "myths," so I shall answer with the Ice Dragon and Water Dragon.
There are multiple differences between the two. One difference is that of their colors. Ice Dragons are primarily white in color while water dragons have a wide range of pastels for their color, which can be shades of blue, purple, and black. Ice dragons live in the arctic, and water dragons live in the water, hunting for food with their flippers, using their spiked tails and teeth for a weapon. Ice dragons usually freeze their food. Personalities differ as well, as Ice dragons are deemed evil and cruel and Water ones are peaceful and majestic.
These are just some of the many differences.
breed ice and water
you get a ice cream dragon
water dragon+ice dragon
water dragon or ice dragon
simply put it ... u cant get a cold dragon in dragon city .. . cuz.... . there isnt anything called a cold dragon ..
Breed Ice and Water Dragon :)
Dragon-type Pokémon take double damage from Ice Type attacks, Dragon Type attacks, and, starting in Pokemon X and Pokemon Y, Fairy Type attacks, unless their secondary typing cancels the other. E.g., Ice has a normal effect on Kingdra since it is Water/Dragon.
Cold and water bud
Ice types are supereffective and so are dragon types. Yes, dragon types ARE EFFECTIVE against dragon types. In some dual-type dragon pokemon, like Garchomp for example, Ice is 4x effective to it and Dragon types, 2x
Dragon types(Garchomp, Haxorus etc) Ice types (Froslass, Weavile etc)
to breed plankton dragon just breed ice and water and earth and electric
Ender Dragon, Aether Dragon, Fire Dragon, Water Dragon, Ghost Dragon, Forest Dragon, Ice Dragon, Nether Dragon.