1. Penguins are not mammals, they are birds. They mainly reproduce the next generation through egg shell hatching, which usually takes about 24-48 hours.

2. Penguins lay eggs, not mammals.

Penguins are birds.

The goose is called: the boat of the ocean and is a very ancient living bird.

They mainly live in the sparsely populated southern hemisphere. Although they belong to the class Birds, they are flightless birds.

3. Penguins have multiple layers of closely connected scaly wings that prevent seawater from soaking through. They can adapt to life in the cold ocean like Antarctica and can survive and reproduce in extremely cold areas of minus 60 degrees Celsius.

Antarctica has a lot of land and a wide sea surface, which also provides penguins with rich and abundant food sources, such as small fish, krill, etc., which are their delicacies.