importing exporting Animation help.

I have a very simple animation. All it is, is a door opening. 24 frames closed to open. I export it like all my other models. But this is the only animated one. When it comes into unity the mesh shows up but i cant find nor can i get the animation to play. Is there a special way to export and import models with animations? Or is the animation just hiding some where that i dont know any help is welcome....... Thanks

Try checking the box "Bake Animations" in the FBX Importer Inspector.