Theo whimpered old world languages against Greg's chest but let himself be calmed and didn't slip away from when he was or who he was with. He was doing well considering, but his back went up when Greg's tone went stern and he looked up to snarl at whoever it was (he'd made a lunge at that lady before) but the person he looked up to see was familiar to him - in more than just the way that products of his own mind were.
He pet Greg's chest - maybe a little too sensually for the street - to calm him before turning to the newcomer. "Mouse is dead." he said hesitantly before smiling, and it was something of brilliance because he turned it to Greg and it was all about Greg. "He's Greg." he said, with a little note of pride in there.