There’re 18 species of living penguins now, and most of them can only be seen in the southern hemisphere. Only one – the Galapagos penguin is found in the other hemisphere.
Among all the penguins, the largest species is emporer penguins, they can be 1.1 m (3 ft 7 in) tall and weigh 35 kg (77 lb). And the smallest species is the little blue penguins, aka fairy penguins, they are only 33 cm (13 in) tall and weigh 1 kg (2.2 lb), even smaller than some chickens.