Community property (2005)

Directed by Michel Leray

From the short story “Community Property” by Lisa Tuttle, in her collection A Nest of Nightmares (1985).
With Kad Mérad, Félicia Massoni, Philippe Laundenbach, Niels Gaffier, and Russie the dog.

A divorcing couple would rather see their dog die than let one of them have sole custody.