WAnimal communication
WAlarm signal
WAnimal echolocation
WAposematism
WBee learning and communication
WBegging in animals
WBumblebee communication
WCat communication
WCommunication in aquatic animals
WDistraction display
WDog communication
WCat–dog relationship
WDominance (ethology)
WDominance signal
WDung midden
WEye pinning
WFacial Action Coding System
WGirneys
WHandicap principle
WHuman–canine bond
WInternational Bioacoustics Council
WLombard effect
WMobbing (animal behavior)
WPant-hoot (call)
WPreorbital gland
WRobosquirrel
WRound dance (honey bee)
WSchreckstoff
WSeismic communication
WSelf-anointing in animals
WShepherd's whistle
WSignalling theory
WSinging caterpillars
WSir Philip Sidney game
WSocial caterpillars
WSocial facilitation in animals
WAnimal song
WTapetum lucidum
WUltrasonic vocalization
WVocal sac
WWaggle dance
WWildlife Acoustics
WWolf communication