Burmese pythons are established across much of southern Florida, but their exact boundary and population remain difficult to measure. Here is what the evidence shows.
At a slow walk, a kangaroo plants its tail like a limb. Force measurements show it can push the animal forward as powerfully as all four legs combined.
A flamingo can become more stable as it relaxes on one leg. Experiments reveal how gravity supports the pose, while other studies show why temperature may influence when birds use it.
The Tasmanian devil's scream, toothy gape and night-time habits inspired a frightening name, but its behaviour and conservation story are more complicated.