Egg

Pokemon Eggs can be sometimes be found if you leave a male and female Pokemon at the Day-Care. Leaving Pokemon like Volbeat and Illumise at the Day-Care will have an egg, but chances are it is another Volbeat or Illumise. Breeding Pokemon that are types weak to or more powerful (e.g., Treecko and Squirtle) will not have an egg (However, there are a few exceptions). Also, leaving Pokemon like Nidoran (female) and Nidoran (male) will have an egg, but just like Volbeat and Illumise, the contents of the egg will be another Nidoran. (Either male or female)


 * Some say you can do this with rare Pokemon like Pluse and Minun.