On a controversial 2010 paper, prof. Colin Groves and colleagues described the critically endangered Northern white rhino as a full species instead of a subspecies. While the species status is not widely accepted by the scientific community, Northern and Southern white rhinoes can be told apart by outward appearances.
The Northern white, on the left, has less concave back and skull profiles and less wrinkly skin around its eyes and elbows. It also rarely has visible wrinkles following the ribs (though, with six animals left, it's hard to say what features are rare). Groves also told me they have more rounded, blunt ears compared to the pointy ears or southern whites.
This is an illustration from today's article in Helsingin Sanomat, the largest daily newspaper in Finland, written and illustrated by me. The article concerns the recent discoveries of "new" species of African megafauna, hiding in plain sight, and the definition of species. After the year 2000, a rhino, an elephant, no less than four crocodiles, and recently an ostrich have been described. Next year, a taxonomic review of giraffes should appear, rising the number of giraffe species from one to perhaps four.
Black markers and Photoshop pretending to be watercolour. The funny composition is because the article's text was printed on the lower part, with title between the two rhinoes.
(Sorry about the weird title: my computer crashed midway submitting this and DeviantArt apparently glitched, submitting a different title than the one it showed to me. Corrected now.)