Trainers around the globe are reporting a few bunch of newly captured pokemons turned into Ditto. We had also shared a YouTube video by Jamaican Clasher. The video shows a Generation 2 Pokemon Hoothoot turned out to be a Ditto which looks a bit weird.
Similar to that users are reporting on twitter about the same. There are around 3 pokemons who are confirmed to be turned into Ditto via a reddit source. They are
The next one is Spinarak, but this one is unconfirmed. Only a single user on reddit has reported about the same followed by comments of other trainers who have faced the issue on above three listed pokemons.
One proof of Sentret turning to Ditto is shared on Twitter, while other one is on YouTube about Hoothoot.
Sentrent can be ditto in disguise! pic.twitter.com/4NqnGraUFD
— PokemonGoAlerts847 (@PoGoAlerts847) February 17, 2017
Hoothoot turning to Ditto: