Trixie is the first puppy I have owned.. Chakita was a full grown Chow, she was 4, and was always bouncy...

Yesterdat Trixie was her normal happy self, we ate a little but not much.. I was told that's ok, some times dogs will eat like they're starving and then only eat a couple pieces of kibble the next... This morning we didn't poop (s'cool, we didn't eat much as I said.. ), and at first she didn't want her breakfast, then she came back to eat it... She whined when I was in the shower (normal), was all bouncy to see me and now we're kinda.. moping.. We don't feel like playing or snuggling.. but we are following me around... So is she feeling down in the dumps, or is this part of her breed being 'independant'?

She has no tummy gurgles so I know it's not something she ate that's disagreeing with her..