Because I apparently don't have better things to do, I've started to revert some of my dragons to babies using the Fountain of Youth. I was surprised that it wasn't an instant action, and actually takes time like breeding or egg incubation. So my question is - is the "revert" time for transforming an adult into a baby the same as breed/incubation time, or is it based on something else?
It takes 12 hours regardless of dragon; I've checked myself and got 12 hours and the Wiki confirms. Making dragons older again also takes another 12 hours for any dragons.