I just want to say that this alledged claim from the Corocoro member seems to be falsified information. His information has no background to prove it, its completely unprofessional, and I looked up his username on Youtube, and found an account boasting a large collection of naruto videos, with the name being naruto related. Why would a representative from a magazine thats interested in the Pokemon franchise be using Naruto as a cover name? Even if its an unrelated coincidence, its not a professional name. Just saying, I wouldnt get excited.
But his starter ideas arent completely out of this world, but I dont believe that gamefreak would make two fowl-based starters in a row of the same type, it seems like its too much of a copy. As well as that, the "tigers" tail seems far too flat, but that could be a trick of the silhouette, and donkey isnt impossible but the tail seems off.