You will be much more likely to encounter Houndour, Bellsprout, Shuckle, Horsea, Hisuian Growlithe, Scyther, and many more Pokemon this season. Their Shiny forms will be more likely as a result.
Arrange your Pokemon by the type of Energy they need, not the Pokemon's type. A Charizard ex that counts as Dark but only uses Fire Energy should be included with Fire-type Pokemon, and a Houndour ...
You must capture all the Johto Pokemon to earn the Platinum Johto medal in Pokemon GO. This might seem easy on paper since the Johto region only had 100 new and unique critters introduced. However ...