Pan paniscusPan troglodytesApe DiseasesGorilla gorillaPongo pygmaeusSimian T-lymphotropic virus 1HominidaeTool Use BehaviorGesturesAnimals, ZooPrimate DiseasesFunctional LateralityColobusAfrica, CentralYawningSpecies SpecificityPhylogenyHuman T-lymphotropic virus 2CebusPrimatesAmoebozoaSimian foamy virusCameroonCommunication Methods, TotalAnimals, WildAnimal CommunicationBehavior, AnimalDeltaretrovirus InfectionsChoice BehaviorBiological EvolutionSocial BehaviorFeeding Behavior