Challenge to Lassie (1949)

In Challenge to Lassie, set in Edinburgh, Scotland in 1860, a collie puppy named Lassie becomes a loyal sheepdog. She befriends a young tea shop owner named Tam and together they face numerous challenges, including a robbery and the death of Tam's father. Despite the hardships, Lassie's loyalty and determination never waver, proving that a dog's love knows no bounds.