Pokémon/Pokédex/Chansey

How to Evolve
Chansey evolves through friendship. (Note: Blissey cannot be obtained in Red/Blue/Yellow.)

TM/HM

 * RB/Y/GS/C/RS/FL: Blizzard, Double Team, Fire Blast, Flash, Hyper Beam, Psychic, Rest, Solarbeam, Strength, Thunder, Toxic
 * RB/Y/C/RS/FL: Ice Beam, Thunderbolt
 * GS/C/RS/FL: Attract, Frustration, Hidden Power, Iron Tail, Protect, Rain Dance, Return, Rock Smash, Sandstorm, Shadow Ball, Sunny Day
 * C/RS/FL: Flamethrower
 * RB/Y: Bide, Body Slam, Bubblebeam, Counter, Double-Edge, Egg Bomb, Mega Kick, Mega Punch, Metronome, Mimic, Psywave, Rage, Reflect, Seismic Toss, Skull Bash, Softboiled, Submission, Substitute, Take Down, Teleport, Thunder Wave, Tri Attack, Water Gun
 * GS/C: Curse, Defense Curl, Dream Eater, Dynamicpunch, Endure, Headbutt, Icy Wind, Mud-Slap, Psych Up, Rollout, Sleep Talk, Snore, Swagger, Zap Cannon
 * RS/FL: Brick Break, Calm Mind, Earthquake, Facade, Focus Punch, Hail, Light Screen, Rock Tomb, Safeguard, Secret Power, Shock Wave, Skill Swap, Snatch, Water Pulse

Breeding

 * GS/C/RS/FL: Heal Bell, Metronome, Present
 * RS/FL: Aromatherapy, Substitute

Trading Cards

 * Base Set #3 - Chansey
 * Neo Destiny #31 - Chansey
 * Expedition #72 - Chansey
 * Aquapolis #69 - Chansey
 * EX Ruby and Sapphire #96 - Chansey EX
 * EX FireRed and LeafGreen #19 - Chansey