Dog robots can trek through mud using moose-inspired hooves. Silicone booties sped up a machine's journey through the Estonian woods by as much as 55 percent. By Andrew Paul.

Researchers in Estonia fitted moose-inspired feet around the ball-shaped appendages of a four-legged robot. Photo: Centre for Biorobotics/TalTech ...

His drone ended up capturing the exact moment the moose stood up from his bed, shook himself free of ice and snow, and sent his antlers flying into the snow at his hooves.