Dwarf lemurs don’t agree on sleep
Fat-tailed species dozes during hibernation, but latest tests find different twist in relatives
![fat-tailed dwarf lemurs](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/09/091716_notebook_itsalive_main.jpg?fit=860%2C460&ssl=1)
Fat-tailed dwarf lemurs (shown) can sleep while they hibernate, but two related species first rouse themselves and then get shut-eye.
David Haring/Duke Lemur Center