Hi LadyHawk
Well I searched and so far the closest I could find that looks similar to the picture is what is called a "Mudpuppy" or Necturus Maculosus which belong to the Family Proteidae. Similar as well is the "Waterdog" that also belongs to the same family.
I'm still going to search some more. Maybe I'll get closer to the real thing.
Love and Light
Lea.