Ghost Signs (107): Un Mystère

Here's a ghost sign spotted by my father in the town of Noyal, Brittany. It's clearly for chocolate, but which brand? The second line of lettering is too obscured to decipher, and appears to have been over-painted with a logo. The logo seemed a better clue, but I'm not even sure what animal that is... 

If anybody has a good knowledge of vintage French chocolate brands, or can otherwise offer a suggestion, please leave a comment!