Well,
It learns.. these moves at these levels.
— Bite
The foe is bitten with viciously sharp fangs. It may make the target flinch.
— Roar
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.
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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
