This is a theory, not a fact

There are alot of rumors that the transforming Pokemon called Ditto is a failed attempt to create Mew. 

Well they are both pink, they are the only Pokemon that know transform, and they have the same weight; 8.8 pounds. It sounds scary, but it sounds like Ditto is actually a melted version of Mew.

Seriously, Ditto is just a big huge pink...blob!

This could also not be true because Mewtwo, is the clone of Mew it pretty much sounds unlikely. Again, this is just a theory. No one know if its