GameCube .cdt files

[LucaWight]

Hi, I've never ripped a model from a game before but I wanted to try to get the model and texture of a cat from an old nostalgic game I used to play, Harvest Moon Magical Melody for the GameCube. The cat model from what I can tell is a .cdt file. I can't find any info on how to view this or convert it to anything else because when I look up .cdt it seems to be about an unrelated file format having to do with corel draw. I want to be able to put this model in Blender or something but I can't find anything out about this.
I wish I could link the files associated with the cat but I can't seem to do that.

Has anyone worked with this file format before?