The animal known for having a long neck is the giraffe. Giraffes are the tallest land mammals, and their long necks are an adaptation that allows them to reach leaves and fruits high up in trees, primarily acacia species. This unique feature helps them access food sources that many other herbivores cannot reach, giving them a significant advantage in their natural habitat. Their necks can grow to be up to six feet long, and they also have specialized vertebrae that support their height. Giraffes are also renowned for their distinctive coat patterns, which vary among individuals and subspecies.