They're cute and live in the snow (well, some of them do), so penguins seem to be a natural fit for festive decorations and activities. But reports of live penguins being used in Christmas parades has raised animal welfare concerns.
22 December 2013
19 December 2013
Photo credit: Daniel Zitterbart
By using a mathematical model that recreated the positions, movements and interactions of individual penguins in a huddle, researchers have revealed that an individual penguin only needs to move 2cm in any direction for its neighbour to react and also perform a step to stay close to it.