Board Thread:Dragon City Questions and Answers/@comment-9892591-20130522171925/@comment-3271569-20130523134130

207.162.80.13 wrote: It's the legendary Habitat you can buy it at level 18, so it shouldn't be verry long till you get it. I suggest you to try and figure out how many days it will take you to level up from 3 level, because it takes 2 days to hatch this dragon and 1 day to build the habitat, so the day you are like almost level 18, start hatching it, then you will level up and build the habitat. The next day you'll have both at the same time!

source:http://dragoncity.wikia.com/wiki/Habitat

It's level 24, the content of the page is not updated yet.