The tallest mammal is the GIRAFFE, which has a height of up to 5.5 meters (18 feet). Giraffes are native to Africa and are the tallest living terrestrial animals in the world. They have long necks and legs and their distinctive coat patterning is made up of large, irregular brown patches on a light background. Giraffes are herbivores and feed mainly on leaves and shoots from trees and shrubs. They are also known for their long tongues, which can reach up to 45 cm (18 inches) in length.