In terms of sheer bulk, the blue whale must take the prize. Every time it takes a mouthful of shrimp-like krill, it swallows literally thousands upon thousands of individuals. When full, the blue whale’s stomach can hold as much as 2.5 tones of krill.
At the other end of the scale, the pygmy shrew – just about the world’s smallest mammals – must consume twice its own weight of food every day. The pygmy shrew is a nervous, constantly active little creature that must feed every few hours to give itself the necessary energy to stay alive.