The smallest is the Little Blue Penguin, which is only about 16 inches. iStock/Fabiano_Teixeira. 3. The fastest species is the Gentoo Penguin, which can reach swimming speeds up to 22 mph.

The smallest penguin species is the little (also called little blue) penguin. These birds grow to 10 to 12 inches (25.4 to 30.48 centimeters) tall and weigh only 2 to 3 lbs. (0.90 to 1.36 kilograms).

The Fairy or Little Blue Penguin, the smallest penguin species, stands at 13-17 inches and weighs just over 1 kg. These adorable birds inhabit New Zealand and Southern Australia.

2. The world’s smallest penguin stands just over 30cm high. In comparison, the worlds smallest penguins are the Little Blue penguins. They are just over 30cm high on their flippers. (Yes, you’re ...