According to the ITIS (Integrated Taxonomic Information System), there are about 19 different species of penguin; all these species of penguins weigh different.
Penguins weigh from a range of 2 to 90 pounds depending on the species of the penguin and the stage of their breeding cycle. The little blue penguins are found near the coast of Australia and New Zealand. They are the smallest and weigh up to 2 or 3 pounds.
The emperor penguins that are found in the Antarctic is the most significant and the largest species of penguin. Sometimes they stand tall at the height of up to 36 to 44 inches or 91.44 to 111.76 cm and weigh between 60 and 90 pounds or 27.21 up to 40.82 kg.