Breed a mud dragon and an air dragon. It worked for me first time. It will help if you get both dragons to lvl 10.
you have to breed the air and a mud dragon in order to get a sandstorm dragon
U breed the two dragons ice and sandstorm
When you breed an earth and firefly dragon, you can get a crystal, scorch, sandstorm, or firefly dragon.
Breed the earth dragon with the fire dragon.
There are a lot of possibilities you could be making a crystal, sonic, quake, sandstorm, or a air dragon.
You don't breed a Kairos Dragon in DragonVale. You have to get parts to complete it.
The most effective method of breeding a sandstorm dragon is an air dragon (lv 10 left) and a moss dragon (lv 10 right). This has about a 17% success rate. The egg is purple with grey diamonds, and has a 2 hour incubation time. The sandstorm dragon may also be purchased in the market for 1,000 gems.
you breed a ice dragon with a mine dragon
You have to breed a plant and a fire dragon.
As of July 2012, there has not been a star dragon in DragonVale.
You have to breed a sun and moon dragon together
You have to breed a metal and a water dragon together.