Animal Intelligence

able acineta action afterwards Amazons animal animal intelligence antennæ ants aphides appear attack bait beavers bees birds Büchner burrows carried caterpillar cells circumstances close colour communicated companions cuckoo Darwin dead display distance door Ecitons eggs elephant emotions evidence experiment fact feet female fish Forel formicarium glass habit Harvesting Ants head hive hole honey Huber inches insects instance instinct intelligence killed labour larva larvæ latter leaves legs MacCook male mandibles manner mental monkey natural selection Nature nest never object observed pieces pond prey propolis pulled pupa queen quote rabbits reason reflex action remarkable returned round says seeds seems seen seized side similar Sir John Lubbock soon species spider surface terrier thread tion took tree trunk turned wall wasp watched whole workers yards young