Thermal imaging is a valuable inspection tool, but it doesn’t actually detect mold. Instead, it identifies temperature differences that may indicate moisture, insulation gaps, or air leaks. A mold dog inspection works differently. Trained mold detection dogs locate the odor produced by active mold growth, helping identify hidden mold behind walls, under flooring, and inside other concealed spaces. In this article, we’ll compare thermal imaging vs mold dogs, explain what each method can and can’t do, and help you understand when each one makes the most sense.