A farmer out walking his cattle in Argentina recently stumbled upon a family of four 20,000-year-old, car-sized armadillos in ...

Elephants are massive creatures with trunks, whereas hyraxes are small, rodent-like animals. However, these seemingly disparate creatures belong to a superorder called Afrotheria. This group of ...

The major histocompatibility complex (MHC) is the genetic foundation for mammals' ability to defend against microbial pathogens (1). Molecules encoded by MHC genes play pivotal roles in innate and ...

Search our Species Guide by entering the first few characters of the species' name in the box below. You can search by English or scientific name and choose between either IOC or Clements as the ...

Greg Peterson, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons ...