The hallway outside the engineering classroom at Stillwater Area High School became a runway on a recent morning for a special guest testing out some new gear crafted by students. With some encouragement, Sadie, a three-legged brown-and-white Brittany spaniel, took a few hesitant hops before taking off down the corridor in a makeshift cart of PVC pipe, swivel wheels and a few sponges for added padding. "It made me really happy to see [Sadie] excited to move around," Harvel said