Robert De Niro

The Goodfellas star owns 18 dogs, something that left his Wag the Dog co-star Woody Harrelson taken aback.

The Brothers star said of De Niro: "We went over to his house here in New York, and nine dogs came to the door.

"They're these little dogs, they get to do whatever they want."

Harrelson added: "Thinking about Bob De Niro, you don't think of him inside of this world with a zillion dogs."