Olivia Coleman, 46, plays Queen Elizabeth in the new series. The real Queen Elizabeth is famous for her love of dogs. In fact, she's owned more than 30 Corgis since she first wore the crown. So there was no way anyone could make a show about the British Royals without including its furriest members.
But Coleman - who owns two pups called Alfred and Pockets - recently confessed that one of the canine cast members isn't always easy to work with. Her name is Lilly, and this mischievous pooch often mixes up work time with playtime. Speaking to Town and Country magazine, Coleman said, "Lily's a little bugger."
A naughty pair of pooches!
Coleman's onscreen husband, Tobias Menzies, confirmed that Lilly is the sort a pooch that does what she wants - when she wants! And Lilly can be a bad influence on the other four-legged star of the show - Prince.
"There's a boy Corgi and a girl Corgi - Prince and Lilly," said Tobias. "The girl Corgi is mischievous. She rarely stays where she's meant to. And when the girl Corgi is there, the boy gets quite mischievous too!"
All it takes is an extra treat - or two!
But despite their naughty antics, Prince and Lilly always get the job done in the end - although this usually happens after a few extra treats. Maybe that was the plan all along!
If you want to see Lilly and Prince in action, season four of the Crown is available now on Netflix.
Watch also: What’s on the menu Your Majesty? It’s a dog’s dinner for the Queen's Corgis