Hmmmm...but everything else is normal - like his poos? If he is still "chewing" at toys, but has truly lost his appetite - then I'm not sure it's due to his teeth. While teething can affect the entire GI tract and can cause pain (and pain can cause nauseousness), I'm still not sure this is causing his appetite loss - bc if his teeth were really hurting him, I don't think he'd chew his toys as often. But it *might* be contributing. If his appetite continues to be depressed and he seems off in any way, I'd probably have him looked at.
