endangered species
A less common variant of 絶滅危惧種 (ぜつめつきぐしゅ). Cross-referenced with 絶滅危惧種, which is the standard term.
See also: 絶滅危惧種
絶滅危険種 is sometimes seen as a variant spelling of 絶滅危惧種.
This is the standard and far more common term for 'endangered species'. 絶滅危険種 is a rare variant.
Compound of 絶滅 (extinction) + 危険 (danger) + 種 (species). The standard term uses 危惧 (apprehension) instead of 危険.