Togepi does not evolve normally, that is, by leveling up. Togepi evolves via a Friendship Evolution. Once a Togepi's happiness is maxed out (easily done by having it hold a Soothe Bell), it needs only to gain a level (either normally, or by using a Rare Candy). It will then evolve into a Togetic.
In pokemon crystal Pigeotto evolve in 36lvl
100
Mareep will evolve at Level 15 in Pokémon Crystal.
level 30
The Level When You Get A Life.
Level 36.
In Pokemon Crystal, Cyndaquil learns Ember at level 12.
Caterpie evolves into Metapod at level 7, and then into Butterfree at level 10
Level 36.
Bellsprout evolves into a Weepinbell at level 21 in Pokemon Crystal.
Level 30.
30