Wombats are one of the only animals on Earth that produce cube-shaped poop - and for years, scientists had no idea how it was ...

The Australian burrowing animals called wombats are the only creatures who have feces in the shape of cubes, and the unusual appearance of their poo has led scientists to ponder a number of theories.

Scientists suspect that the wombat evolved this unique trait to mark its territory on rocks and logs with poop that won’t easily roll off Ron Knight via Flickr under CC BY 2.0 Burrowed beneath ...

The wombat’s intestine does something no other gut on Earth does. Understanding why reveals how deeply evolution can sculpt even the most intimate biology.