"All right." Sam felt a little apprehensive, but he told himself there was nothing to worry about. Standing up, he started to strip his clothes off. "I'll, uh, ruin my clothes if I leave them on," he explained awkwardly with his t-shirt up around his head. Not that Steve hadn't seen him naked before - not that Sam was really bothered by nudity in general - but this felt different, somehow.

The change wasn't too disturbing to view from the outside, though if you listened hard enough, you could hear bones snapping and reforming, and the odd grunt of pain from Sam. He was used to it by now. The whole thing took a couple of minutes, and at the end, a large black panther stood in front of Steve, the tip of his tail twitching.