I know, I know. Crazy question. BUT... I taught my Cocker Spaniel to 'sing'...on command she would go off on this howling thing. I just tried it with Sassy and all I got was her backing up away from me and making funny little noises....like she suspected I was losing it.
LOL She does have some pretty funny responses. Lately she has taken to gently nipping at my toes when I am barefoot.