"That food's level is not high enough for your pet" - I can't recall ever seeing that message before Nost.
Am I the only person that thinks this shouldn't exist? Pets should be able to eat any food with a lower level then them, they just receive a reduced happiness count (remember +17 happiness). This is currently bugged (well, since release) and seems like an easy fix, but I'm too lazy to make a tuleap account right now. Maybe one day. Or perhaps it's already reported...
I miss being able to feed my pets red wolf meat etc in a pinch....