Gizmo had finally started to bark a bit. But this morning, as i left the room, my husband said that Gizmo tried to bark...but it just sounded like nothing would come out. Gizmo was playing with another dog later in the day and sounded like he was squeeking or whining. The weather is changing; it's getting colder. Could he be sick? Or did he get into something that made him lose his voice?