Who said that donkeys were stupid?

'Dunce's hat' has an equivalent in French, bonnet d'âne (donkey's hat). On the contrary, I'm in a position to know that whatever they're expressing, there's always a good reason for it. Here, listening to the click of the camera. Ooops, I just forgot, for the ones who don't know her already, she's our female donkey and her name is Campagne.