That night, as I tucked Mila into bed, she whispered sleepily, “Mommy, Rex is my hero.”

“Yes,” I whispered back, my eyes stinging. “He’s mine too.”

Now, every time I look at Rex, I don’t just see a pet. I see the wall that stood between my child and disaster—a faithful, silent, irreplaceable guardian who, in the blink of an eye, proved that loyalty can be loud, fierce, and lifesaving.