"giant kangaroo" 的定义和意义

What is a "giant kangaroo"?

The giant kangaroo, or Diprotodon, was a massive marsupial that roamed Australia during the Pleistocene epoch, around 2 million to 50,000 years ago. It was one of the largest mammals to have ever existed, with some species reaching over 4 meters in height and weighing up to 4,500 kilograms. Diprotodon had a stocky build, with a long, curved trunk, powerful legs, and a short tail. Its head was large and held low to the ground, with a wide, square-shaped mouth adapted for grazing on vegetation. Diprotodon likely lived in diverse environments, ranging from forests to grasslands, and may have traveled in herds. It is believed to have gone extinct around 25,000 years ago, likely due to climate change and pressure from human hunting.