Cool :) Well, succeeded on the values, then! Though I am not very familiar with PAR codes, values, and the creation of Game Genie codes. I know for a fact that there has to be at least one more value for the Pound part 3 (it features a wrestling ring with the Lout brothers as mini-boss), so there could be more? It was fun trying out for the values so far, though. Yeah I really like this game, thanks in advance for any codes :) I don't think there's any codes for the EU version at Gamehacking yet.
Edit: Doh, all Zoo and City levels are also missing from my values. Haven't found those yet, either.
Edit 2: the rest of the levels:
0036 - Start at the City (Part 1)
G3KT-AACG
0037 - Start at the City (Part 2)
G7KT-AACG
0031 - Start at the Pound (Part 3)
GFKT-AACG
0032 - Start at the Zoo (Part 3)
GKKT-AACG
0034 - Start at the Zoo (Part 1)
GVKT-AACG
0035 - Start at the Zoo (Part 2)
GZKT-AACG
Edit 3: Some weird/not useful ones:
Weird sounds/music, I think it's slowed/distorted the City music (black screen)
LFKT-AACG
Stimpy hairball sound (black screen)
L7KT-AACG