Infrared (IR) thermography is a noninvasive diagnostic screening tool that does not require handling or restraint of an animal. Physiologic or pathologic processes involving changes in surface temperature may be evaluated using this technique. This modern method provides real-time, instantaneous visual images with measurements of surface temperatures over a greater distance. The first medical application of “thermography” was by Hippocrates (ca. 460-375 BC), who used thin layers of mud for his temperature measurements, similar to modern thermography. An area of