Animal Intelligence

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