154 1915-2001 1996f-291 2007a-217 401 africangrayparrot alligators alteredstatesofconsciousness andrewr animal animalbehavior animalintelligence animals animalsounds animaux annimalcommunication apes atlanticspotteddolphin auditoryperception bb1460 bb1463 bees behavior biography biologicalevolution biology bonobo casestudies cats cephalopoda chemicalsenses chemistry chemoreceptorcells chimpanzees chimpanzé codingtheory cognition cognitioninanimals communication communicationanimale communicationnonverbale comparative comparativepsychology consciousness consciousnessinanimals crocodiles delphine dolphins drum ecology emocions emocionsenelsanimals emoties emotion emotions emotionsinanimals evolution evolution(biology) expressedemotion expression facialexpression friendship gelaatsuitdrukkingen general gerbillinae gerbils habitsandbehavior halloran hallucinogenicdrugs hallucinogens hearing history hominidae hominids honeybee horses human-animalcommunication human-animalrelationships humanevolution humanisticpsychology informationtheory insects insectsocieties insectsounds instinct intellect intelligence johncunningham jungleanimals juvenileliterature kanzi(bonobo) languageandlanguages languagedevelopment learning learninginanimals lifesciences lilly mammals marinebiology marinelife mathematicalmodels mongoliangerbil montgomery nat020000sci039000nat000000 nature nervoussystem neurobiology newyorktimesreviewed nonfiction nonverbalcommunication octopuses origin p90e922004 pantroglodytes perception perceptioninanimals pets pheromones philosophyandscience physiology physionomie plants primates primatologists psycholinguistics psycholinguistique psychologie psychologiecomparée psychology ql737p962h3452012 ql776 research science scientists sensesandsensation sexualbehavior sexualbehaviorinanimals smell socialbehaviorinanimals soundproductionbyinsects sozialverhalten sy territoriality territoriality(zoology) tiersprache tiger traveldinets unitedstates vergelijkendepsychologie verhalten vladimir vocalization wale whales wl104 wv272 zookeepers zoology émotions émotionschezlesanimaux