Yep, the original shot is just not something that warrants HDR treatment. Not a wide dynamic range to start with, and the subject matter isn't all that compelling... Now, maybe your plan was to just take that photo and practice with it to see what HDR could do, in that case yah, you did increase the range a bit and now you know how to do it. Now take that to a photo that can benefit from the HDR treament and see how it goes...
Hampsters image is more of the classic HDR type of image. Take a scene that has a realistic potential for wider dynamic range to play with, and add the HDR treatment to emphasize both ends of that range. It's got pop, but doesn't look too artificial.