What level do you have to be to breed a quake dragon in DragonVale?

The most effective method of breeding a quake dragon is a blazing dragon (lv 10 left) and a crystal dragon (lv 10 right). This has about a 15% success rate.

Other methods include:

• Blue fire (lv 10 left) + Crystal (lv 10 right)
• Panlong (lv 10 left) + Love (lv 10 right)
• Earth (lv 10 left) + Lightning (lv 10 right)
• Air (lv 10 left) + Crystal (lv 10 right)

The egg is brown with a turquoise lightning bolt. It takes 6 hours to breed, and another 6 hours to hatch.

You may also purchase the quake dragon from the market for 100 gems.