Loretta Young's (Mary Longstreet) beloved Irish Setter, Red, is poisoned, and her brother finds Red in the woods and brings him to her. Red is then taken to the Veterinarian for an autopsy.
The main antagonist is a N*zi, but there are no specific derogatory antisemitic comments; the closest the character gets is saying "Marx wasn't a German, he was a Jew."
There is discussion of and footage from the N**i concentration camps though and discussion of the gas chambers and mass graves/lime pits. This footage does show actual bodies though not close up.