WAnimal cognitionWAnimal CognitionWBrain-to-body mass ratioWCollective animal behaviorWAnimal consciousnessWConsumer demand tests (animals)WCooperative pulling paradigmWDistraction displayWEffect of psychoactive drugs on animalsWElevated plus mazeWInstinctWInterspecies friendshipWAnimal navigationWList of animals by number of neuronsWPreference testWTheory of mind in animals