Neither mud nor puppy, this strange salamander is just a big baby. Like you. Seriously, you look like an infant. Listen to find out why!
Also, find out all about paedomorphism and neoteny. Enjoy learning about the fascinating life and life cycle of the common mudpuppy on this episode of Species.
Here are a couple photos that, even on their own, present a compelling argument for human neoteny:
Here is a video showing, in graphic detail: