including all extant and notable species—from the lordly lion, to the ostentatious ocelot, to even extinct entries like the jaw-dropping sabertooth tiger,” Pop Chart writes in its description ...

The ESA currently protects approximately 1,700 domestic and 700 foreign species. The chart below includes all animal species currently listed under the ESA. Please see the key below for an explanation ...

A species is ... now known as Linnaean taxonomy. This was the idea that every organism could be classified into increasingly specific groups, culminating in its species. All species also belong ...

At the most basic level, human evolution is articulated through classifications of, and evolutionary relationships among, hominin species. This article presents a basic taxonomy and phylogeny of ...