I can confirm these level up moves for growlithe, I may have missed a move or two but I know the ones I recorded are accurate
6 roar
8 leer
10 odor sleuth
12 helping hand
17 flame wheel
19 reversal
21 fire dang
23 take down
28 flame burst
30 agility
32 retaliate
34 flamethrower
39 crunch
41...