In the last two decades there have been an alarming number of amphibian extinctions

Amphibians, a unique group of vertebrates containing over 7,000 known species, are threatened worldwide. A 2004 global assessment found that nearly one-third (32%) of the world's amphibians are threatened, representing 1,856 species. Amphibians have existed on earth for over 300 million years, yet in just the last two decades there have been an alarming number of extinctions, nearly 168 species are believed to have gone extinct and at least 2,469 (43%) more have populations that are declining. This indicates that the number of extinct and threatened species will probably continue to rise.

Amphibian diversity is highest in the tropics, especially in the Amazon. Brazil has the most described species, over a 1,000 species. By contrast, the United States is nearly the same size as Brazil with about a third of the amphibian species (although it has many more salamanders!).

Source:
AmphibiaWeb, March 3, 2017
https://amphibiaweb.org/declines/declines.html
Cartography by Christina Lew, February 2017