Animated series move errors

In the Pokémon anime, there will often come up a Pokémon that knows a move it cannot learn legally in any of the games. It's unknown whether these are actual mistakes or a writing policy of not having to stick to the games too closely.

List of anime Pokémon with moves they can't learn in the games

#	Icon	Name	Move	Episode
012	File:012MS.gif	Ash's Butterfree	Counter	EP003
127	File:127MS.gif	Samurai's Pinsir	Tackle	EP004
110	File:110MS.gif	James's Weezing	Counter	EP006
020	File:020MS.gif	Ash's Raticate	Hi Jump Kick	EP015
001	File:001MS.gif	Ash's Bulbasaur	Whirlwind	EP032
116	File:116MS.gif	Misty's Horsea	Sludge	EP040
001	File:001MS.gif	Ash's Bulbasaur	Tickle	EP050
037	File:037MS.gif	Brock's Vulpix	Agility	EP072
006	File:006MS.gif	Ash's Charizard	Tackle	EP108
001	File:001MS.gif	Ash's Bulbasaur	Dig	EP225
246	File:246MS.gif	Ash's Larvitar	Harden	EP258
187	File:187MS.gif	James's Hoppip	Fly	AG084
397	File:397MS.gif	Ash's Staravia	Gust	DP002
269	File:269MS.gif	Jessie's Dustox	Stun Spore	DP008
425		Marnie's Drifloon	Fly	DP028

When it comes to the flying types using fly, although they can't learn the move fly in the games, they can still fly without using the move. None of these fly Pokemon have been seen using fly as a move, so they may or may not belong in this chart.