Rose didn't even try to hide the undignified snort that came out when she started laughing. "You've been hanging around Jack too long," she told him with as stern an expression as she could manage. Hearing Jack's idea of 'adventure' would probably ruin Ianto's mind for good. And make Rose's actual adventures pale in comparison. "Never. He was really old when we met him. He died the next year, actually, though I certainly hope the two things aren't related!" No, Adam was the closest she'd come to being romatically involved in any of their travels. Or...well, Jack. But she wasn't about to say that in front of his current partner! It'd be a bit like one of those afternoon talk shows her mum sometimes had on while working.
"You have a pet...what?" she blurted. Okay, that was new to her. And really, why? She should demand a trip to see dinosaurs. Or then again, maybe not. It was the Doctor, after all. He'd probably have them running from a Tyrannosaurus before it was all said and done. "It sounds incredible, honestly. Jack as a leader? You know, I was earthbound before I ended up here. It's kind of nice knowing there's alternatives."
Instead of going charging off into the TARDIS' very heart, which is what she'd actually end up doing once all was said and done. Ah, well. It couldn't be said that Rose wasn't impulsive.