Well, it depends on the animal. Butterflies, for example, have between 4 or 5 stages in their life cycle. Frogs have around 3 or 4. Grasshoppers have 3. Humans have between 2 and 13.
The ladybug, like all beetles, undergoes a complete metamorphosis during its life. The life stages of the ladybug are: egg --> larva --> pupa --> adult.