the truth about ike

When Ike, Y and I are alone, Ike is the sweetest, most well behaved dog you've ever seen.

But introduce another person into the equation, and the dog goes completely insane.
When visitors stick around long enough, they see the obedient snuggly dog we love. That is, if Ike hasn't jumped up and down with excitement so ferociously that he's busted said visitor's lip. (This has happened twice... Cesar Milan, are you out there?)
But this is the real Ike; what I see every morning when I leave the house: