The term 'Savanna Beasts' refers to large animals that inhabit the savanna, a grassland ecosystem found in parts of Africa and South America. One of the most iconic savanna beasts is the rhinoceros, which has six letters in its name. Rhinos are large, herbivorous mammals with thick skin and two horns on their snouts. They are known for their strength and size, and are considered to be one of the most endangered species in the world.