Instructions
Place Totodile at the front of your Pokemon lineup.
Battle wild Pokemon and other trainers using Totodile. Since Totodile is in the first slot in your lineup, he will be the first Pokemon automatically sent out to battle. Defeat enemies to earn experience, which is used to level up.
Tap "Pokemon" on the bottom screen. Tap Totodile. The points listed next to the box "To Next Lv" are the amount of experience points Totodile needs to go up one level. Additionally, the experience points can be viewed as a bar underneath his health when he is in battle.
Earn enough experience points to reach level 18 with your Totodile. Upon reaching level 18, he will automatically evolve into Croconaw.
Earn enough experience points to reach level 30 with your Croconaw. Upon reaching level 30, he will automatically evolve into Feraligatr, his final evolution.