How do you breed a mountain dragon in DragonVale?

There are several ways to breed a sun dragon. The most effective is sonic (level 10 left) and storm (lv 10 right). This has a 14% success rate.

Some other (slightly less effective) methods include:

• Crystal (lv 10 left) + Blue Fire (lv 10 right)
• Storm (lv 10 left) + Fire (lv 10 right)
• Blue Fire (lv 10 left) + Crystal (lv 10 right)
• Ice (lv 10 left) + firefly (lv 10 right)
• Mud (lv 10 left) + Storm (lv 10 right)

The egg is orange with a sun sun icon in the middle. It takes 48 hours to hatch. It is rumored that time of day is a factor in getting a sun dragon, but this is false.

The sun dragon can also be purchased in the market for 2,000 gems.