In the Dec. 10 SN: Star-starved galaxies, animal math, Parkinson’s roots in the gut, supersolid success, Celebrex’s controversial heart risk, a prionlike memory protein, yo-yo dieting’s downside, blue begonias and more.
SPIDER DAD OF THE YEAR The small Manogea males buck the trend among spiderkind, giving up their solitary ways to stay near their offspring and fight off attackers.
Marcelo O. Gonzaga
GUT CHECK Using 3-D scans of mounted skeletons, scientists measured the body cavities of 126 animal species, including herbivores such as sloths, elephants and stegosaurus as well as carnivores such as lions, otters and T. rex.
M. Clauss et al/Journal of Anatomy 2016
NUMBER SMARTS Cats show quantity-related abilities. Without training, cats can pick out differences between groups of a few small objects, such as 2 versus 5, but the felines may be using visual shortcuts.