Tree huggers are people who have a strong affinity for nature and the environment. They often express their love for nature by hugging trees, hence the name. Two animals that are often associated with tree huggers are vines and sloths. Vines are plants that grow on other plants or structures, using them for support. Sloths are slow-moving mammals that live in trees and feed on leaves. Both vines and sloths are important to the environment and are often seen as symbols of the tree hugger lifestyle.