While humans are unable to hear ultrasonic sounds, many animals rely on them for communication, navigation, and even hunting. For a long time, researchers believed animals used the same biomechanical ...

While wombats may appear cute and cuddly, they are wild animals that, over time, have developed ways to defend themselves against predators. (Wombats have buns of steel—and they poop in cubes.

In the animal kingdom, pregnancy is usually the role of the female, but a few unique species have flipped this biological norm. Male pregnancy evolved in these species to increase reproductive success ...