To make a pokemon's happiness go up you have to care for it. For example: not letting it faint in battle, using items on it (potions, hp ups, pp ups, ect), and giving it poffins. There are also certain berries that say it will increase it's happiness or "friendship", but will ower it's base hp, pp, defense, attack, sp defense, or sp attack.
You have to get his sheen (happieness) all the way up then grow it a level. See what kind of poffin it likes.
Yes ther is.a rare candy can reduce a pokemons level by 1.you cant buy them at pokemarts.
All my pokemons are 100 level. There is a lottery or something and I won a machine that makes all my pokemons level up not doing anything. If you do the lottery and get that, this might happen.
Train it on pokemons...du'uh. go to the Pokemon league alot and kill the pokemons and lvl up...
Flying or phycic Pokemon Level 20 Pokemon recommended
Fighting pokemons with almost the same level.
pokemon do not evolve on pokemon colosseum
Ponyta evolves at Level 40 in Pokemon diamond.
Give them rare candies which increase a pokemons level by one.
You can't all pokemons level stops at lv. 100.
You get a LUMINEON at level 32 on Pokemon Diamond.
Rephrase your question = What level does snorlax evolve on Pokemon diamond? =