An update of the Red List of Threatened Species shows that 17,291 species out of a total of 47,677 assessed species are currently in danger of extinction, which some believe indicates a worldwide extinction crisis.

According to the Red List of Threatened Species, compiled by the International Union for the Conservation of Nature, 21% of all mammals, 30% of amphibians, 12% of birds, 28% of reptiles, 37% of freshwater fish, 70% of plants, and 35% of invertebrates are at risk of extinction.

Of the world’s 5,490 mammals, 79 are classified as “extinct,” or “extinct in the wild,” with 188 categorized as “critically endangered,” 449 classified as “endangered,” and 505 classified as “vulnerable.” The number of reptiles on the list includes 1,677 types, with 293 more species added this year.

Of the world’s 6,285 amphibians, 1,895 are in danger of extinction, with 39 classified as “extinct,” or “extinct in the wild,” 484 categorized as “critically endangered, 754 classified as “endangered,” and 657 classified as “vulnerable.”