Murph, I never could get to bark on queue. He's just never been all that barky.

Maddie, I use to excitedly say "speak" and it didn't take her long to figure out if she barked back, she'd get a cookie. She's much more communicative in barking and making all kinds of vocal sounds to me, which Murph never has been. So it made teaching her to speak very easy.

Oz, I can not for the life of me get him to bark on "speak", but if I say "Where is your ball? Where is that ball?" or "Where is Moo Boo?" (which is Murph's nickname), then he'll bark. It's almost as if he's only going to communicate if there's a question involved. Doesn't see the point in barking, just to bark. Gotta be answering me.

Par...