Scientific Animal Name Generator

Every animal on Earth carries a two-part Latin name assigned under the rules Carl Linnaeus set out in 1758 and the International Code of Zoological Nomenclature maintains today. The first word is the genus, always capitalized, naming the group of close relatives: Panthera covers lions, tigers, jaguars, and leopards. The second is the specific epithet, always lowercase, distinguishing one species within that genus. Together they are italicized, and after first mention the genus is abbreviated to a single letter, as in P. leo.

Epithets come from four sources. Descriptive adjectives cover appearance or behavior (nivalis, snowy; ferox, fierce), and they must agree in gender with the genus, which is why it is Strix arcana but Corvus arcanus. Place names take -ensis or -icus. Honorifics take -i for one man, -ae for one woman, and -orum for a group. A few are nouns in apposition that never change, like Carcharodon carcharias.

If you are inventing a species, pick a real genus your creature would plausibly belong to and add a new epithet. That single choice does more taxonomic worldbuilding than any invented root, because it silently tells a reader what the animal is related to.