The Colosseum unlocks at level 10. It costs 50,000 coins.
It's the plant or fire habitat. Plant is level 1 and fire is level 3.
You have to be level seven.
You have to be level 14
The poison dragon unlocks at level 7.
Level 14!
The large treat farm unlocks at level 5.
Level 12
at level 27
You get it on lvl 19
The Colosseum in Dragonvale can be purchased upon reaching Level 10 for 50,000 coins. It takes four (4) hours to build.
NO
Well to make a swamp dragon you need water and earth. You get water at level 14 and you also can buy it at level 14. So it's level 14.
Yes, it sells for $25,000.
By getting XP points. If you want them fast, try building a colosseum as this gives around 25000 every day.
Buy more or win them at the Colosseum.