Producer Nina Jacobson confirmed today on twitter that it's Buttercup's big day on the Mockingjay set! Apparently, they're filming the "Crazy Cat" scene in District 13 today. For those of you who don't know who Buttercup is - and if you don't this whole website must be thoroughly confusing - it's Prim's beloved cat, who is barely tolerated by Katniss.
Prim and Buttercup. Image courtesy Seventeen
In Mockingjay, Katniss devises a game of "Crazy Cat" to entertain the citizens of District 13 while they're confined *SPOILERS* because of a bombing. Katniss shines a flashlight around the compartment and Buttercup tries to catch it. It later becomes a metaphor for how Katniss is feeling about *SPOILERS* Peeta's capture and torture, so it's a pretty important scene and one we're thrilled is staying in the movie!