Foxes hunt small prey by diving headfirst through the snow, a behavior known as mousing. Researchers used 3D-printed fox skulls and analyzed videos to study how the fox’s pointy snout reduces impact force in snow, minimizing tissue damage. In PNAS: ow.ly/tM5j50RxGaK

A study in nature presents a drug delivery system inspired by the ink-jet propulsion mechanisms of cephalopods, such as squid and cuttlefish. The approach could circumvent the need for needles to administer some types of medication and vaccines. go.nature.com/3UVOcRx