Because they are Flightless Birds.
Penguins are birds, so they belong to the vertebrate class Aves.
Penguins belong to the class Aves, which includes all birds. Within this class, penguins are part of the order Sphenisciformes, which consists of all penguin species.
penguins are in the class of birds
Penguins belong to the class Aves, which encompasses all birds. Within this class, they are part of the order Sphenisciformes and the family Spheniscidae. Penguins are unique, flightless birds primarily found in the Southern Hemisphere, particularly in Antarctica. Their distinct adaptations for swimming and cold environments set them apart from other bird species.
A penguins class is Aves and their infraclass is Neognathae.
Penguins do not belong in the snakes group ! Penguins are birds - not reptiles !
Fightless bird
penguins are neither mammals or reptiles. penguins lay eggs.
Birds belong to class "aves".
Birds belong to class "aves".
Birds belong to class "aves".
Ornithologist.