As of December 2021, the International Union for Conservation of Nature (IUCN) lists 673 critically endangered amphibian species, including 146 which are tagged as possibly extinct.
Additionally, 1193 amphibian species (16.4% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status.
As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN.
"[4] This is a complete list of critically endangered amphibian species evaluated by the IUCN.
True salamanders and newts There are 549 frog species assessed as critically endangered.