Paprika (2006)
Doctor Toratarō Shima, chief of staff at the Institute for Psychiatric Research, is trapped in a dream. Paprika frees him by entering his dream. And him. The following exchange occurs:
Paprika: "I wanna show you my gratitude."
Shima: "Really? Is it shaped like a square?"
Paprika: "No. It's round."
I have no idea what's up with the dog.