What is the irony in Old Yeller?

The irony in "Old Yeller" lies in the bond formed between the boy, Travis, and the dog, Old Yeller, as they face numerous challenges together. Just as they become inseparable and the dog proves to be Travis's protector and companion, the story culminates in a heartbreaking decision where Travis must put Old Yeller down due to rabies. This twist highlights the fragility of life and love, emphasizing that the very source of comfort and joy can also lead to profound loss. Ultimately, it underscores the bittersweet nature of growing up and the sacrifices often required in life.