Gekijô-ban Dôbutsu no Mori

Was never released outside Japan.

During the credits, still images show what happens after the film. Tanukichi/Tom Nook expands and remodels his store from Nook's Cranny into Nook 'n' Go. Futa/Blathers and Mr. Resetti find the Seismosaurus fossil and it gets placed into the museum.

Referenced in Outside Xtra: 7 Animal Crossing Easter Eggs You Need to Find (2020)