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List of Terra Dragon Combinations
Terra + Flame = Flaming Rock or Volcano
Terra + Sea = Waterfall or Mud
Terra + Nature = Tropical or Cactus
Terra + Electric = Star or Chameleon
Terra + Ice = Snowflake or Alpine
Terra + Dark = Hedgehog or Venom
Please note that you cannot breed Terra and Dark together for Armadillo dragon.

Flame Dragon Combinations
Flame + Terra = Flaming Rock or Volcano
Flame + Sea = Cloud or Blizzard
Flame + Nature = Firebird or Spicy
Flame + Electric = Hot Metal or Laser
Flame + Metal = Medieval or Steampunk
Flame + Dark = Vampire or Dark Fire
Please note that breeding Flame and Ice to get Cool Fire Dragon is not possible here.

Sea Dragon Combinations
Sea + Terra = Mud or Waterfall
Sea + Flame = Cloud or Blizzard
Sea + Nature = Nenufar or Coral
Sea + Electric = Storm or Lantern
Sea + Ice = Ice Cube or Ice Cream
Sea + Metal = Seashell or Mercury
Sea + Dark = Petroleum or Pirate

Nature Dragon Combinations
Nature + Terra = Tropical or Cactus
Nature + Flame = Spicy or Firebird
Nature + Sea = Coral or Nenufar
Nature + Ice = Dandelion or Mojito
Nature + Metal = Dragonfly or Jade
Nature + Dark = Carnivore Plant or Rattle Snake
You cannot breed Electric and Nature directly to get Gummy Dragon.

Electric Dragon Combinations
Electric + Terra = Star or Chameleon
Electric + Flame = Laser or Hot Metal
Electric + Sea = Storm or Lantern Fish
Electric + Ice = Fluorescent or Moose
Electric + Metal = Battery or Gold
Electric + Dark = Neon
Electric and Nature cannot be breed.

Ice Dragon Combinations
Ice + Terra = Snowflake or Alpine
Ice + Sea = Ice Cube or Ice Cream
Ice + Nature = Dandelion or Mojito
Ice + Electric = Flourescent or Moose
Ice + Metal = Platinum or Pearl
Ice + Dark = Penguin
Ice and Fire cannot be breed directly to get Cool Fire Dragon.

Metal Dragon Combinations
Metal + Flame = Medieval or Steampunk
Metal + Sea = Mercury or Seashell
Metal + Nature = Jade or Dragonfly
Metal + Electric = Battery or Gold
Metal + Ice = Platinum or Pearl
Metal + Dark = Zombie
Metal and Terra cannot be breed to get Armadillo Dragon.

Dark Dragon combinations
Dark + Terra = Hedgehog or Venom
Dark + Flame = Dark Fire or Vampire
Dark + Sea = Petroleum or Pirate
Dark + Nature = Carnivore Plant or Rattle Snake
Dark + Electric = Neon
Dark + Ice = Penguin
Dark + Metal = Zombie

Rare Hybrid Dragons
The above combinations is what I would use to get the rare hybrids.
Firebird(Flame+Nature) + Star(Terra+Electric) = Gummy
Medieval(Flame+Metal) + Alpine(Terra+Ice) = Armadillo or Cool Fire or Soccer
Red Woods + Petroleum will give you a shot at Leviathan. There are also other combinations. Any War hybrid and Sea hybrid will also yield the same result. Poo is no longer a rare hybrid and is actually an exclusive dragon. Petroleum and Pirate dragon are now regular hybrids after the Light/War update of July 2013.
Photon(Light+Electric) + Rattlesnake(Nature + Dark) = Fallen Angel
There are also plenty of other combinations that will give you the rare hybrids.

These dragons are extremely powerful and useful in dragon city battles.
Since the July 2013 Light/War update, you will need to breed the pure or pure hybrids together for a chance to get the legendary dragons.
For example:
Pure + Pure Flame
Pure Ice + Pure Dark
Pure Terra + Pure Metal
Pure Electric + Pure Nature
The new breeding time for legendary dragons are 2 days and 6 hours.

Breeding Pure Dragons
These can be breed using any of the 4 legendary dragons. You can mix the similar ones as well. Either of these combos are good:
Mirror + Mirror = Pure
Legendary + Crystal = Pure
To get the pure elements, just use the generation 1 dragons and breed it with the Pure Unicorn get the respective elements.
Pure + Earth = Pure Earth
Pure + Flame = Pure Flame
Pure + Sea = Pure Sea
Pure + Nature = Pure Nature
Pure + Electric = Pure Electric
Pure + Ice = Pure Ice
Pure + Metal = Pure Metal
Pure Dark = Pure Dark
Pure Dark is the only one that has 2 heads. Pretty cool!

This is the newest group that is released by Social Point. People were complaining they could not complete their dragon collection. Please note that you must breed the dragons with the level requirements for a chance to get the them. Use any Legendary(Droconos, Wind, Nirobi, Legendary, Mirror or Crystal) and a rare hybrid with the required levels to obtain exclusives.
Level 10 Exclusives(Parents must be level 10 or higher):
Any Legendary + Armadillo = Sky or Plankton
Any Legendary + Coolfire = Great White
Any Legendary + Gummy = Seahorse + Paradise
Level 15 Exclusives(Parents must be level 15 or higher):
Any Legendary + Armadillo = Deep Forest or Bat
Any Legendary + Coolfire = Music or Carnival
Any Legendary + Gummy= Emerald
Any Legendary + Soccer = Ruby or Fossil
Level 20 Exclusives(Parents must be level 20 or higher):
Any Legendary + Coolfire = Angry or Diamond
Any Legendary+ Armadillo = Lava or Poo

Light Dragon Combination List
(Archangel)Light + Terra = Justice
(Archangel)Light + Flame = Sun
(Archangel)Light + Sea = Luminsicent
(Archangel)Light + Nature = Gaia
(Archangel)Light + Electric = Photon
(Archangel)Light + Ice = Cold Star
(Archangel)Light + Metal = Rainbow
(Archangel)Light + War = Elfic
Light Dragon cannot be breed directly with Dark.

War Dragon Combination List
War+ Terra = Colossal
War + Flame = Juggernaut
War + Nature = Red Woods
War + Electric = Tesla
War + Ice = Nightwind
War + Metal = Panzer
War + Dark = Dark Stone
War + Light = Elfic
War Dragon cannot be breed directly with Sea.
There are also other combinations, but these are the easiest ones to get. Good luck with breeding! If you need any help, feel free to let me know by commenting below! You can also visit the dragon city guide here.

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