I came across several of these when digging out my pond. This one was accidentally hit by the excavator. I need to find some better pictures, I can't remember how many toes they had.
Edit: I couldn't find any more photos, but I did find two videos with the Amphiuma in them. You can download/view them here:
https://drive.google.com/drive/folders/1GAsWmYMBujpUgpkXmPRLsxDrQTyYhC07?usp=sharing
This was years ago before I looked them up, so I was calling them newts in the video.
Another duck from Hermann Park
About to get run over on the road, we moved her out of harm's way!
Juvenile with regenerated tail at tip