One of the many reasons why I love biology is when a great and weird story gets told about some kind of living phenomenon. This week I was surprised to learn that wombat feces are cubic. Evidently it’s been known for quite some time that the wombat’s poop is cube shaped and it is hypothesized that wombats use it to mark their territories and the fact that it is cubed means that it doesn’t easily roll away, but it more likely has to do with attempting to conserve water and the structure of their digestive tract.
Dr. Patricia Yang and co-workers investigated the physical properties of the wombat intestine and determined that variation in the amount of stretch in different sections (by using an inflated balloon no less!) resulted in the cubic feces. As you can imagine, the wombat poop finding is receiving a lot of attention in the popular media. In my opinion the best headline goes to Vice.
Fun fact: Dr. Yang won the 2015 Ig Nobel Prize in Physics for testing the biological principle that most mammals empty their bladders in about 21 seconds.