The W.C. Fields admonition to never work with children or animals gets a hard pass when those stars are one of the screen’s charming rejuveniles and a canine companion trained for war but imbued with empathetic instincts. Dog (B+), the feature film co-directing debut of Channing Tatum and Reid Carolin, is a rare breed of heady human/animal bond pictures with a dramatic undercurrent about the aftermath of war and just needing someone to talk to about it. The film stars Tatum as an Army Ranger who must escort the Belgian Malinois military working dog of his fallen commander down the Pacific coast to her handler’s funeral. It’s packed with funny and dramatic road trip elements, some slapstick sequences and some moments of profundity along the journey as both man and dog overcome emotions for which they were never trained. This is an ideal vehicle for Tatum’s wry, affable Everyman demeanor, plus the animal is ever a winning screen partner. There’s definitely some content in the film not appropriate for younger kids, but the portrayal of a duo facing PTSD as they attempt to move on in civilian life makes this an unexpectedly moving story.