And Zangoose can't learn Cut And Helioptile/Heliolisk can't learn Sunny Day And Gastly can't learn Poison Gas And Growlithe can't learn Growl And the Pidgey line, the Starly line, and the Pidove line can't learn Peck, which is ironic since Peck is one of the names of Pidgey's attacks on one of the trading cards