You will most likely get a Firefly or Scorch. It depends on what dragon is left and what dragon is right.
Lightning (left) Lava (right). That = Firefly
Fire (left) Lightning (right). That = Scorch
The most common results of cold + lava are in order:
Breeding lave and lightning may result in lava, lightning, cactus, scorch, or air dragons.
(Old Answer: They can't breed due to them being opposites.) I'm breeding them right now, and I don't know yet.
You will get a mountain dragon.
you get an ice dragon
you get a lava dragon I'm pretty sure
Lava, frost fire, blue fire and mountain.
The top 10 results of blazing + iceberg in order are:EquinoxIcebergBlazingRainbowIceSnowRainFireworkFogSmoke
Storm
The five most common results of breeding chrome and flower dragons are:ForgeBrassFlowerPollenPoison
The result of breeding an blazing dragon and crystal dragon has 9 possible dragons you may breed which is the firefly dragon, scorch dragon, quake dragon, blazing dragon, sonic dragon, lava dragon, solstice dragon, crystal dragon, and rainbow dragon.
Results of current and tree dragons can be mud, crystal, or seaweed dragons.
probably a chrome
You get a plant dragon.
You get the scorch dragon
Blue fire
90% moss
Mud dragon!!
you get a poision dragon