Set in the English countryside of the 1920s - when otter hunting was still legal - this film follows the life of Tarka the Otter from his birth into adulthood. We witness his close shaves, and his struggle with a man who tries to keep our furry hero as a pet.
At the end of the film, Tarka the otter and Deadlock the dog get into a final underwater confrontation, during which both animals mortally wound one another and drown. The fight itself is not overly graphic (mostly achieved through a series of rapidly cross-cut close-ups), but you do see Deadlock's body in the aftermath.
An assortment of animal corpses are hung up on display by the gamekeeper, including Tarka's mother. We get a few close-up shots of her lifeless, bleeding face. The drowned body of Deadlock the dog is shown at the end.
Tarka is implied to drown along with Deadlock at the end, but his case no body is shown, just a sequence of rising air bubbles that eventually cease. Earlier in the film, Tarka's father is killed by the hunt (happens offscreen; we only know because the narrator tells us) and his mother is shot by a gamekeeper.