Giraffe - This species of giraffe is the tallest animal on Earth, with males reaching heights of up to 5.5 meters (18 feet).
African Elephant - This species of elephant is the second-tallest land animal on Earth, with males standing up to 4 meters (13 feet) tall at the shoulder.
Camel - The dromedary camel is the tallest of the two species of camels, with males reaching heights of up to 2.2 meters (7.2 feet) at the shoulder.
Moose - This species of deer is the tallest in the world, with males reaching heights of up to 2.1 meters (6.9 feet) at the shoulder.
Elk - Also known as wapiti, this species of deer is the second-tallest in the world, with males standing up to 1.5 meters (4.9 feet) at the shoulder.
Ostrich - This species of bird is the largest in the world by height, with males standing up to 2.8 meters (9 feet) tall.
Greater Kudu - This species of antelope is one of the tallest in the world, with males standing up to 1.6 meters (5.2 feet) at the shoulder.
Bactrian Camel - This species of camel is the second-tallest, with males reaching heights of up to 2 meters (6.6 feet) at the shoulder.
Southern Ground Hornbill - This species of bird is one of the tallest flying birds in the world, with males standing up to 1.3 meters (4.3 feet) tall.
Emperor Penguin - This species of penguin is the tallest of all penguin species, with males standing up to 1.2 meters (4 feet) tall.