How do we know? Norbert’s tongue.
The Big N, who is actually rather small, can’t control his mouth muscles when they come in contact with the mythical dairy product.
Instead of calmly chewing his treat, Norbert’s bark box goes into full derp. The tongue comes out and just stays there, twiddling around like a worm searching for wet soil. It would be kind of weird if it weren’t so freaking silly and sweet.
Note: This is a look only Norbert can pull off. DO NOT attempt this reaction to cheese at your next fondue party.