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Catching Pokemon in one of the hottest mobile games of all time is not always easy, regardless of bugs and other annoyances that might cause you even more trouble than normal. That's because not all Pokemon have the same capture rates, a recent video explained. Furthermore, a high flee rate will make it difficult to catch some of the creatures in Niantic's hit game. That means you'll be able to catch some of them a lot easier than others, and you might have a tough time catching them all, as the saying goes.

In what follows, you can see a list of the 15 most difficult Pokemon Go characters to catch, as compiled by Business Insider.

You should make note that the base percentages change as your Trainer increases. If you want to have any hope at all of catching the Pokemon on this list, you should definitely invest in better balls and berries for them.

8% base-capture rate

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  • Ivysaur
  • Charmeleon
  • Wartortle
  • Raichu
  • Clefable
  • Ninetales
  • Arcanine
  • Gyarados
  • Dragonair
  • Gengar

4% base-capture rate

  • Venusaur
  • Charizard
  • Blastoise
  • Dragonite

99% flee rate

  • Abra