An echidna’s to-do list: Sleep. Eat. Dig up Australia.
Short-beaked species of this mammal is a valuable ecosystem engineer
![short-beaked echidna](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/11/112616_notebook_itsalive_main.jpg?fit=860%2C460&ssl=1)
MIXED UP MAMMAL Yes, a short-beaked echidna is a mammal — warm-blooded with fur and mother’s milk — but with quirks.
Courtesy of C. Clemente