The blue whale gives birth to the largest baby in the animal kingdom, weighing around 2 tons at birth.
African elephants give birth to calves that weigh up to 100 kilograms, making them one of the largest newborns.
Giraffes give birth to calves that are around 2 meters tall at birth, making them one of the tallest newborns.
Hippopotamuses give birth to calves that can weigh up to 50 kilograms, making them one of the heaviest newborns.
Walruses give birth to calves that weigh around 60 kilograms, making them one of the largest newborns in the marine world.
Polar bears give birth to cubs that weigh around 500 grams, and they rely on their mother for warmth and protection in the Arctic environment.
Kangaroos give birth to joeys that are underdeveloped and weigh only a few grams, but they grow rapidly in the mother's pouch.