Until recently there was but one species of Slimy Salamander. Now there are thirteen, due to modern laboratory techniques. No, mad scientists did not somehow create thirteen species from one; instead, with DNA analysis and a strenuous application of statistics, the one species was split into thirteen. This one is a charming young Mississippi Slimy Salamander, despite being in Tennessee.

Here's a large adult Mississippi Slimy Salamander, this one from Kentucky. You might think that after all that effort to carefully distinguish thirteen species differing mainly in subtle genetic ways, somebody could have come up with slightly more accurate English names, eh? (OK, OK, so they probably were referring to the river basin rather than the state.)