Few cinematic stories are as life-affirming or tug as effectively at our heartstrings as those exploring the bond between humans and dogs. The unwavering loyalty and adoration of a faithful pup can melt even the hardest of hearts, making it little wonder that filmmakers continually return to the subject. This week sees the release of David Ayer’s Heart of the Beast, starring Brad Pitt as a retired US Special Forces officer stranded in the Alaskan wilderness alongside his loyal dog, Odin –...