Okay this may sound weird, funny, whatever you want to call it. For the past 8 months of his life, he has never barked, whined, cried, growled, or made a sound. He started barking yesterday, only when my son's singing toy truck come near him. I know what you might think. No, I'm not crazy. Hehe I just thought that Buttercup was a mute all this time and I found out that he's not. I'm so excited. LoL I know I'll get annoyed of it over the days, weeks, months, who knows, maybe even years but look on the bright side. He only barks when the truck sings. How weird is that?