What moves can raticate learn?

Answer 1

As of Pokemon Omega Ruby, Alpha Sapphire, X, and Y, these are the moves Ralts can learn by leveling up, TM/HM, move tutor, and Egg moves.

By leveling up in X and Y:

Growl (level 1), Confusion (level 6), Double Team (level 10), Teleport (level 12), Lucky Chant (level 17), Magical Leaf (level 21), Heal Pulse (level 23), Calm Mind (level 28), Psychic (level 32), Imprison (level 34), Future Sight (level 39), Charm (level 43), Hypnosis (level 45), Dream Eater (level 49), and Stored Power. (level 54)

By leveling up in Omega Ruby and Alpha Sapphire:

Growl (level 1), Confusion (level 4), Double Team (level 6), Teleport (level 9), Disarming Voice (level 11), Lucky Chant (level 14), Magical Leaf (level 17), Heal Pulse (level 19), Draining Kiss (level 22), Calm Mind (level 24), Psychic (level 27), Imprison (level 29), Future Sight (level 32), Charm (level 34), Hypnosis (level 37), Dream Eater (level 39), and Stored Power. (level 42)

By TM/HM:

Psyshock, Calm Mind, Toxic, Hidden Power, Sunny Day, Taunt, Light Screen, Protect, Rain Dance, Safeguard, Frustration, Thunderbolt, Return, Psychic, Shadow Ball, Double Team, Reflect, Torment, Facade, Rest, Attract, Thief, Round, Echoed Voice, Fling, Charge Beam, Will-O-Wisp, Flash, Thunder Wave, Psych Up, Dream Eater, Grass Knot, Swagger, Sleep Talk, Substitute, Trick Room, Secret Power (OR/AS only), Dazzling Gleam, and Confide.

Egg Moves:

Ally Switch, Confuse Ray, Destiny Bond, Disable, Encore, Grudge, Mean Look, Memento, Mitsy Terrain, Shadow Sneak, Skill Swap, and Synchronise.

By Omega Ruby/Alpha Sapphire Move Tutor:

Fire Punch, Helping Hand, Hyper Voice, Icy Punch, Icy Wind, Magic Coat, Magic Room, Pain Split, Recycle, Shock Wave, Signal Beam, Skill Swap, Snatch, Snore, Thunder Punch, Trick, Wonder Room, and Zen Headbutt.

Answer 2

This list is only accurate to Generation V. The level guide starts at Level 20, when Rattata evolves into Raticate.

By Level Up:

Lvl. 20 - Scary Face (Normal)

Lvl. 24 - Crunch (Dark)

Lvl. 29 - Assurance (Dark)

Lvl. 34 - Super Fang (Normal)

Lvl. 39 - Double-Edge (Normal)

Lvl. 44 - Endeavor (Normal)

By TM/HM

TM05- Roar

TM06- Toxic

TM10- Hidden Power

TM11- Sunny Day

TM12- Taunt

TM13- Ice Beam

TM14- Blizzard

TM15- Hyper Beam

TM17- Protect

TM18- Rain Dance

TM21- Frustration

TM24- Thunderbolt

TM25- Thunder

TM27- Return

TM28- Dig

TM30- Shadow Ball

TM32- Double Team

TM42- Facade

TM44- Rest

TM45- Attract

TM46- Thief

TM48- Round

TM57- Charge Beam

TM67- Retaliate

TM68- Giga Impact

TM73- Thunder Wave

TM75- Swords Dance

TM83- Work Up

TM86- Grass Knot

TM87- Swagger

TM88- Pluck

TM89- U-Turn

TM90- Substitute

TM93- Wild Charge

TM94- Rock Smash

HM01- Cut

HM04- Strength

By Breeding:

Bite (Dark)

Possible Fathers: Ekans and Arbok, Meowth and Persian, Growlithe and Arcanine, Eevee evolutionary line, Snubull and Granbull, Houndour and Houndoom, Poochyena and Mightyena, Loudred and Exploud, Mawile, Electrike and Manetric, Seviper, Absol, Shinx evolutionary line, Hippopotas and Hippowdon, Patrat and Watchog, Lillipup evolutionary line, Pansage and Simisage, Pansear and Simisear, Panpour and Simipour, Sandile evolutionary line, Heatmor

Counter (Fighting)

Possible Fathers: Slakoth evolutionary line, Lucario

Final Gambit (Fighting)

Possible Fathers: Mankey and Primeape, Lucario

Flame Wheel (Fire)

Possible Fathers: Growlithe and Arcanine, Ponyta and Rapidash, Cyndaquil evolutionary line, Chimchar evolutionary line

Fury Swipes (Normal)

Possible Fathers: Sandshrew and Sandslash, Meowth and Persian, Psyduck and Golduck, Mankey and Primeape, Sentret and Furret, Aipom and Ambipom, Sneasel and Weavile, Teddiursa and Ursaring, Linoone, Vigoroth and Slaking, Kecleon, Chimchar evolutionary line, Glameow and Purugly, Stunky and Skuntank, Purrloin and Liepard, Pansage and Simisage, Pansear and Simisear, Panpour and Simipour, Drilbur and Excadrill, Zorua and Zoroark, Cubchoo and Beartic, Heatmor

Last Resort (Normal)

Possible Fathers: Eevee evolutionary line, Aipom and Ambipom, Phanpy and Donphan, Pachirisu, Lillipup evolutionary line, Minccino and Cinccino

Me First (Normal)

Possible Fathers: Sentret and Furret, Stantler, Absol, Lucario

Revenge (Fighting)

Possible Fathers: Weavile, Oshawott evolutionary line, Bouffalant

Reversal (Fighting)

Possible Fathers: Growlithe and Arcanine, Vigoroth and Slaking, Lucario, Lillipup evolutionary line, Mienfoo and Mienshao, Bouffalant

Screech (Normal)

Possible Fathers: Ekans and Arbok, Meowth and Persian, Psyduck and Golduck, Mankey and Primeape, Aipom and Ambipom, Umbreon, Dunsparce, Sneasel and Weavile, Whismur evolutionary line, Seviper, Kecleon, Stunky and Skuntank

Uproar (Normal)

Possible Fathers: Vigoroth and Slaking, Whismur evolutionary line, Spinda, Darumaka and Darmanitan

By a Tutor (the following moves are only availible for tutors in B2W2):

Covet (Normal)

Endeavor (Normal)

Icy Wind (Ice)

Iron Tail (Steel)

Last Resort (Normal)

Sleep Talk (Normal)

Snore (Normal)

Super Fang (Normal)

Uproar (Normal)

Zen Headbutt (Psychic)