The hippopotamus, often called a "hippo," is a large, mostly herbivorous mammal native to sub-Saharan Africa. They are known for their massive size, with adults weighing between 3,000 to 8,000 pounds. Hippos spend much of their time in water, which helps keep them cool under the hot sun. Their skin secretes a natural sunscreen, protecting them from sunburn. Hippos are social animals, typically living in groups called pods, which can consist of 10 to 30 individuals. Despite their seemingly docile nature, they are considered one of the most dangerous animals in Africa due to their territorial behavior and powerful jaws. They primarily feed on grass during the night.