You and Swiss were on a tour together and somehow you snuck puppy onto the bus. So far, it looked like a golden retriever, and it's head poked out of your shirt. Swiss's head immediately snaps up

"Where did you get the from, " he says, his eyes wide.

"We already have a dog, dear, we don't need another dog, " he says but gives the puppy some pats on the head. "No more dogs. "

You only needed to give him some time, and name the dog so you would get attached, on purpose.