It learns.. these moves at these levels.
The foe is bitten with viciously sharp fangs. It may make the target flinch.
The foe is scared off, to be replaced by another Pokémon in its party. In the wild, the battle ends.
6 - Ember
The foe is attacked with small flames. The target may also be left with a burn.
9 - Leer
The foe is given an intimidating leer with sharp eyes. The target's Defense stat is reduced.
14 - Odor Sleuth
Enables the user to hit a Ghost type with any type of move. It also enables the user to hit an evasive foe.
17 - Helping Hand
A move that boosts the power of the ally's attack in a Double Battle
20 - Flame Wheel
The user cloaks itself in fire and charges at the foe. It may also leave the target with a burn.
25 - Reversal
An all-out attack that becomes more powerful the less HP the user has.
28 - Fire Fang
The user bites with flame-cloaked fangs. It may also make the foe flinch or sustain a burn.
31 - Take Down
A reckless, full-body charge attack for slamming into the foe. It also damages the user a little.
34 - Flamethrower
The foe is scorched with an intense blast of fire. The target may also be left with a burn.
39 - Agility
The user relaxes and lightens its body to move faster. It sharply boosts the Speed stat.
42 - Crunch
The user crunches up the foe with sharp fangs. It may also lower the target's Defense stat.
45 - Heat Wave
The user exhales a heated breath on the foe to attack. It may also leave the target with a burn.
48 - Flare Blitz
The user cloaks itself in fire and charges at the foe. The user sustains serious damage, too.
So when its done learning the moves you'd want it to know, that it learns via level up, you should evolve it.
All of my info, came from Serebii.net