The possibility of velvet leashes.

"Did you know that Henry VIII of England had velvet leashes for his dogs?"
"Yes, Finnegan. I did know that."
"Impressive. But did you know that mine was a beautiful emerald green?"
Slight pause. Surprised eyebrows. "Pardon?"
"Katherine picked it out for me. She said it went beautifully with my coloring."
"Katherine. As in Queen Katherine?"
"Well the scullery maid wasn't in charge of picking out colors for each dog's leash," Finnegan huffed. The very idea!
"Oh. Certainly. NOT the scullery maid who also happened to be called Katherine."
"Human Woman, you are laughing at me again. I am telling you the truth!"
"You somehow managed to swim in the first Olympics in Greece and then Zip! You were living in 16th-century England at the end of a velvet leash in Henry VIII's household. Um. I really need to check the ingredients on your bag of kibble."
"I'm telling the truth."
Oh, the finely pointed nose sticking in the air was tempting. She kissed it. Finnegan wiggled in happiness.
"Someday, Human, someday you'll see."
"I don't think it's possible for me to time-travel, Finn."
Astonishment popped his big coffee-dark eyes. She really believed that? How nonsensical! Why, he had big plans for his history-loving-writer-woman. BIG PLANS.
"You might, " He advised her, "Seriously reconsider your archaic belief system."
"Finn. You might seriously reconsider whether you want a walk."
"I'm just sayin'," He murmured as he trotted off to fetch his 21st-century plain black cotton leash.
Crazy Corgi, she thought, reaching for her sneakers. Such a dreamer. Her fingers paused between the loops of her laces. Since when had she ever thought dreaming was silly? Hmm. Since never. Funny, she hadn't had any memorable dreams of late. Maybe it was time to allow them back in. Maybe her belief system was a bit rusty. It couldn't hurt to play along with the Corgi. Maybe he really did have the ability to show her something as fabulous as an emerald velvet leash at the end of Henry VIII's big hand. That would certainly be something. Well, she told herself, it never hurts to stay open to possibility. Finnegan made a soft noise from the doorway. He was ready. There was no time left. They needed to be going.