As of September 2016, the International Union for Conservation of Nature (IUCN) lists 2458 least concern amphibian species. 38% of all evaluated amphibian species are listed as least concern. No subpopulations of amphibians have been evaluated by the IUCN.
This is a complete list of least concern amphibian species evaluated by the IUCN.
List of least concern amphibians Wikipedia
There are 162 salamander species assessed as least concern.
True salamanders and newtsSouthern torrent salamander (Rhyacotriton variegatus)
Two-toed amphiuma (Amphiuma means)
Three-toed amphiuma (Amphiuma tridactylum)
There are 2244 frog species assessed as least concern.
Includes tree frog species and their allies.