Gumnivores are animals that primarily feed on gum, a type of sticky substance produced by certain trees. This diet is especially common among some primates, such as certain species of lemurs and marmosets, as well as some rodents and birds. Gumnivores have specialized adaptations, such as strong teeth and digestive systems, to efficiently consume and process gum. Their feeding habits play a role in the ecology of their habitats, often aiding in tree health and regeneration.