The idea of having his dong hanging out for everyone to see was a bit more than Luke could deal with, so he decided to try on the more discreet female Shepard costume. The hind legs looked far too small to even get a foot into, but as the clerk had promised, the costume stretched and slid on easily. He got his hands into the forelegs and worked the rest of the body on like a jumpsuit. He looked in the dressing room mirror after pulling the zipper up. the seam was invisible under the fur, and it looked like his body had a real covering of fur. But he looked like a hairy human with a dog's tail instead of a dog. Then again, the head was hanging back, looking disturbingly real.
The paws had stretched like lumpy gloves, giving him just enough grip with fingertips to get the head flopped forward over his own. It should have been too small and sat on top like a hat, but as it settled on his skull it started to slide down quickly. Luke gasped as pressure seemed to crush his head inward. He grabbed at the costume's head frantically, but it completed sliding down into position. For a terrifying moment Luke could not see, hear, or even breath. His whole body suddenly felt hot, and he was hit with a wave of disorientation. Then whatever had locked things up released, and he sucked in air. Blinking, he became aware of a strong sweat smell - did he need a shower that bad? And something else - canine. The costume smelled much stronger now.
He could not quite get vision to clear - colors looked oddly faded, and nothing looked quite right. Why was he so hot? The costume was fur, OK, but it was like a hundred heat lamps were focused on him. Twisting, he caught his own reflection in the mirror and froze. The costume on his body looked pretty much the same, fur stretched over a human body. But the head! The eyes were liquid brown dog's eyes, and they moved and blinked with his own. The nose looks moist, and he both saw and felt his ears prick up. His tongue lolled out and he panted.
Before all of that could sink in, the heat increased. Staring in the mirror, Luke saw his body begin to shrink and change. The finger protrusions of the paws began to draw in, and his arms and lower legs got thinner and shorter. Hands reshaped into paws, arms into forelegs, his chest barreling in the center as shoulders shifted to different positions. His pelvis altered, and a sudden urge to pee was relieved by yellow liquid that came from a tiny nub behind the rows of black teats. Luke fell forward with a yelp, catching himself on his forelegs. After another few seconds, the heat vanished and he felt perfectly comfortable. Except.. he looked in the mirror from his new four-legged stance.. he was really a German Shepard!