5. Hippopotamus
The Hippopotamus is known for its immense size, with adults weighing up to 4,000 pounds. These semi-aquatic mammals thrive in the rivers and lakes of sub-Saharan Africa. Despite their bulky appearance, hippos are surprisingly agile in water and can hold their breath for several minutes. Their powerful jaws and territorial nature make them one of the most formidable animals in the African landscape.