Two different ragdoll cats, Magic and Orlando, were used in the movie. After a casting, Magic was selected due to his adherence, curiousness and never could be startled away. Orlando was a stand-in used for the scenes when required to stay put or be carried for long periods of time. Both cats were born in Poland.
The trivia item below may give away important plot points.
When Ove meets his future wife Sonja on a train, she is reading The Master and Margarita, the classic Russian novel written by Mikhail A. Bulgakov in the 1930s but not published in any form until 1967, 27 years after the author's death. The story has been filmed a number of times, including a 1974 Yugoslav feature, a 1994 Russian feature, a 2005 Russian feature, a 2012 Israeli animated short, a 2015 U.S. short, and a projected 2017 U.S. feature.