Forum Thread
Ditto & Ditto
Forum-Index → Help → Answered → Ditto & DittoJust to clarify in case, as Kinishaka has said, ditto cannot breed with itself. You can use it to breed with female, male or gender neutral but it cannot breed with itself or any legendaries (other than those given to you by the professor - if you can get the legend again via the same method, chances are, it can't be bred).
In the future, if you have a question about the game that has only one answer and is more about technicality than opinion, please post in the 'help' section!
Art credit: gelatin