Voices in Spanish version are better, "mis panditas"

Rating: 7/10 (13 March 2009)

I have watched both versions many times, and the voices in the Spanish version really bring the characters to life, where can I find out the names of the Spanish speaking actors? I have searched the web and IMDb but cannot find any information about the Spanish actors, shouldn't they be credited as well. They did a superb job. The first scene in the "gym" where Po gets hit in the groin and says "mis panditas, always gets a big laugh in Spanish language theaters where in the English version, his answer is mumbled as if it wasn't correct to make that kind of joke in a children's movie. I think the animation is fantastic and everything else, but the voices are the weakest part of the movie for me, sad after how much effort was put into the animation. If you don't speak Spanish, just listen to the tonality. The messenger duck who goes to the prison is a good example of the difference, the Spanish duck's voice is just right, the English version's is too deep.
Does anyone know where the info on the Spanish actors is?