Heidi & Hans-Juergen Koch / Honey Bee (Apis mellifera) guard caste in defense and attack body posture, Bee Station at the Bavarian Julius-Maximilians-University of Wurzburg, Germany

Konrad Wothe / Army Ant (Eciton sp) major caste, carrying insect pupa, La Selva, Costa Rica

Konrad Wothe / Army Ant (Eciton burchellii) submajor caste, carrying cricket, La Selva, Costa Rica

Konrad Wothe / Army Ant (Eciton burchellii) submajor caste, carrying cricket, La Selva, Costa Rica

Ingo Arndt / Termite colony migrating across rainforest floor showing workers and soldiers, Yavari River, Amazon Basin, Peru

Mark Moffett / Army Ant (Eciton hamatum) workers linking to one another toe to toe, building a new bivouc for the day, hundreds of thousands of ants will eventaully join in, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers linking to one another toe to toe, building a new bivouc for the day, hundreds of thousands of ants will eventaully join in, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers linking to one another toe to toe, building a new bivouc for the day, hundreds of thousands of ants will eventaully join in, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry section of dismembered prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry food back to colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry food back to colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) carrying leaf, about to be landed on by tiny parasitic fly which will attempt to lay an egg on the submajor, the egg will then hatch into a larva which will consume the an...

Mark Moffett / Army Ant (Eciton burchellii) submajor worker carrying section of dismembered centipede back to nest as media worker behind her lifts dragging end, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carrying pupae while migrating, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton hamatum) major worker. Also called a soldier, its primary job is defending the colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carrying pupae while migrating, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) soldier's mandibles are curved like fishooks which soldiers cannot extract once they've bitten a victim, thereby dooming themselves, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton hamatum) major worker biting human. Also called a soldier, its primary job is defending the colony, Barro Colorado Island

Mark Moffett / Army Ant (Eciton burchellii) workers carry dead prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers link toe to toe forming a massive nest or bivouac, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) major and minor workers protecting colony food cache, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Labidus praedator) workers swarm over, pin-down and kill frog prey, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Labidus praedator) workers swarming over grasshopper prey, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carrying food back to nest, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) worker carrying food back to nest, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) small minor workers grooming sub-major ant, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton i) two soldiers or major workers patrolling edge of trail, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) major and minor workers carry dead prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) major workers carrying prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers form a bridge along the trail for colony members to cross, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton hamatum) major worker. Also called a soldier, its primary job is defending the colony, Barro Colorado Island, Panama

Mark Moffett / Semi-vegetarian army ant (Labidus coecus) swarm catches, quickly kills and dismembers a fruit fly that accidentally landed in their midst, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton i) soldier fighting two smaller workers of rival army ant (Eciton hamatum) species. The two colonies sparred for an hour in a chance meeting and retreated without fatalities, Barro Co...

Mark Moffett / Army Ant (Eciton burchellii) workers form a step along the trail for larger worker carrying larva, Barro Colorado Island, Panama

Mark Moffett / Leafcutter Ant (Atta sp) workers carrying flower petals back to nest, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carry dead prey back to feed colony, Barro Colorado Island, Panama

Mark Moffett / Ant (Oligomyrmex sp) queen with workers, world's smallest ant, Singapore

Mark Moffett / Army Ant (Eciton hamatum) major worker or soldier, whose main job is defending the colony, biting human finger with sharp and powerful mandibles, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton hamatum) workers of different sizes link toe to toe forming a massive nest or bivouac, Barro Colorado Island, Panama

Mark Moffett / Semi-vegetarian army ant (Labidus coecus) swarm catches, quickly kills and dismembers a fruit fly that accidentally landed in their midst, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton sp) workers form a bridge along the trail for colony members climb from one leaf to another, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers form a bridge along the trail for colony members to cross, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers form a bridge along the trail for colony members to cross, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers form a bridge along the trail for colony members to cross, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers form a bridge along the trail for colony members to cross, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) soldier is cornered by smaller worker of rival Army Ant (Eciton hamatum) species, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton hamatum) worker fighting with another Army Ant (Eciton burchellii) species, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers of different sizes carry food back to colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers of different sizes carry food back to colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton i) submajor and smaller workers carry food back to colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) minor workers, working together to dismember prey, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) minor workers of swarm over and kill scorpion, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton sp) workers of different sizes carrying pupa while migrating, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carrying pupa while migrating, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton burchellii) workers carrying pupa while migrating, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton sp) workers of different sizes carrying pupa while migrating, Barro Colorado Island, Panama

Piotr Naskrecki / Fungus Gardening Ant (Cyphomyrmex faunulus) worker on fungal mycelium in the fungal garden these insects cultivate in their nests, Guyana

Piotr Naskrecki / Leafcutter Ant (Atta sp) major worker carrying a piece of leaf to feed the underground fungal garden these insects cultivate, Guyana

Piotr Naskrecki / Harvester Termite (Hodotermes mossambicus) worker foraging for plant material, Botswana

Christian Ziegler / Army Ant (Eciton hamatum) workers with huge mandibles guarding nest entrance, Barro Colorado Island, Panama

Christian Ziegler / Leafcutter Ant (Atta columbica) worker carrying freshly cut leaf fragment, Barro Colorado Island, Panama

Christian Ziegler / Leafcutter Ant (Atta columbica) two workers tending to larva in fungus garden, Barro Colorado Island, Panama

Christian Ziegler / Army Ant (Eciton hamatum) teamwork in food transportation, a large wasp pupae is carried by several workers, Barro Colorado Island, Panama

Patricio Robles Gil / Young girl with firewood, Usambara Mountains, north Tanzania

Patricio Robles Gil / Sugar Cane worker using machete to cut down cane, Fiji, South Pacific

Patricio Robles Gil / Local man with a chain saw cutting down rainforest trees for lumber, northern Espiritu Santo Island, Vanuatu

Piotr Naskrecki / Acacia Ant (Pseudomyrmex flavicornis) worker enters hollowed out spine of Bullhorn Acacia that serves as breeding chamber and shelter, Costa Rica

Piotr Naskrecki / Assassin Bug (Lopodytes) attacking Termite worker, Botswana

Piotr Naskrecki / Termite workers tend nymphs and eggs in the nest until they are capable of foraging outside, Guinea, West Africa

Piotr Naskrecki / Weaver Ant (Oecophylla longinoda) worker carrying younger worker to new nest, Guinea, West Africa

Piotr Naskrecki / Weaver Ant (Oecophylla longinoda) worker ant on silk glue holding nest together, Guinea, West Africa

Piotr Naskrecki / Weaver Ant (Oecophylla longinoda) worker gently squeezing larvae for silk glue used to bind leaves into a nest, Guinea, West Africa

Piotr Naskrecki / Weaver Ant (Oecophylla longinoda) worker pair with larvae which have silk-producing glands and if gently squeezed by workers, they can apply it to leaves like glue, Guinea, West Africa

Piotr Naskrecki / Weaver Ant (Oecophylla longinoda) workers pulling together leaves and holding them in place until other individuals bring the living tubes of glue, their own larvae, Guinea, West Africa

Piotr Naskrecki / Army Ant (Eciton hamatum) motionless soldier guards an endless stream of workers leaving the bivouac, Costa Rica

Piotr Naskrecki / Army Ant (Eciton hamatum) soldiers, like all workers in the colony, are non-reproductive females, Costa Rica

Piotr Naskrecki / Spiny Ant (Polyrhachis sp) worker, presumed model for ant mimicking katydids and spiders, Guinea, West Africa

Piotr Naskrecki / Green Tree Ant (Oecophylla smaragdina) worker guarding Treehopper nymph which excretes honeydew, Australia

Piotr Naskrecki / Weaver Ant (Oecophylla longinoda) two workers killing a worker Harvester Ant (Pheidole sp), Guinea

Mark Raycroft / Border Collie (Canis familiaris) herding sheep in the snow

Mark Raycroft / Border Collie (Canis familiaris) herding sheep in pasture

Mark Raycroft / Border Collie (Canis familiaris) herding sheep in pasture

Kim Taylor / Honey bee {Apis mellifera} worker with yellow pollen sack executing 'waggledance' to indicate food source.

Mark Raycroft / Siberian Husky (Canis familiaris) four adults pulling musher on dogsled

Mark Raycroft / Siberian Husky (Canis familiaris) adult hiking through the snow wearing a backpack

Gerry Ellis / Weaver Ant (Oecophylla longinoda) workers using larvae silk to weave nest from water berry leaves, Maputaland Coastal Forest Reserve, South Africa

Konrad Wothe / Orangutan (Pongo pygmaeus) orphan with attendant at rehabilitation facility, Wanariset, Borneo

Mike Parry / Saltwater Crocodile (Crocodylus porosus), Cites approved, farm, abattoir processing meat and skins, Papua New Guinea

Gerry Ellis / Elderly woman separating rice seed from husk, mountain village above Pokhara, Nepal