Walking on two legs is a rare and fascinating ability in the animal kingdom, observed across birds, mammals, and even small rodents. From waddling penguins to hopping kangaroos, these creatures have ...

The top row shows variation in a zooplankton, Daphnia: the morph on the right is produced in the presence of a predator cue. The second row shows an example of dimorphic variation in horn length, ...

Nature has evolved a number of unique survival tactics, and one of the most fascinating ones is the ability of some animals to transport their home wherever they roam. These animals do not need to ...