Although hippos look quite tranquil lounging together near deep mid - river pools, they are quite territorial and are often very aggressive when surprised or challenged. They are extremely powerful.
उनींदे ड्राइवरों को सलाह दी जाती है कि किसी सुरक्षित स्थान पर गाड़ी रोककर कुछ देर सो लें ।