Vincent Grafhorst / Thunder storm with lightning bolts at sunset over Kalahari, Khutse Game Reserve, Botswana

Vincent Grafhorst / Sunset over plains, Khutse Game Reserve, Botswana

Vincent Grafhorst / Double rainbow over Kalahari, Kgalagadi Transfrontier Park, Botswana

Richard Du Toit / Burchell's Zebra (Equus burchellii) and Carmine Bee-eater (Merops nubicus) as passenger, Savuti, Chobe National Park, Botswana

Richard Du Toit / Burchell's Zebra (Equus burchellii) mother and foal, summer, Savuti, Chobe National Park, Botswana

Richard Du Toit / Southern Giraffe (Giraffa giraffa) and Burchell's Zebra (Equus burchellii) at water hole, Khwai River, Botswana

Mitsuaki Iwago / Burchell's Zebra (Equus burchellii) mother and foal, Botswana

Gerry Ellis / Sunset and storm clouds over waterhole, Kwando River flood plain, Linyanti Swamp, Okavango Delta, Botswana

Mitsuaki Iwago / Burchell's Zebra (Equus burchellii) foal portrait, Botswana

Mitsuaki Iwago / Burchell's Zebra (Equus burchellii) portrait, Botswana

Richard Du Toit / Baboon spoor. Moremi reserve, Botswana, Southern Africa

Richard Du Toit / Martial Eagle (Polemaetus bellicosus) juvenile taking flight, Kgalagadi Transfrontier Park, Botswana

Richard Du Toit / Martial Eagle (Polemaetus bellicosus) juvenile, Kgalagadi Transfrontier Park, Botswana

Matthias Breiter / Giant Millipede (Scaphiostreptus sp), Linyanti River, Botswana

Pete Oxford / Hoodia (Hoodia lugardii) succulent flowering, Makgadikgadi Pans, northeast Botswana

Pete Oxford / Hoodia (Hoodia lugardii) succulent flowering, Makgadikgadi Pans, northeast Botswana

Vincent Grafhorst / Storm rolling in over Kalahari, Khutse Game Reserve, Botswana

Vincent Grafhorst / Thunder storm with lightning bolts over Kalahari, Khutse Game Reserve, Botswana

Vincent Grafhorst / Thunder storm with lightning bolts over Kalahari, Khutse Game Reserve, Botswana

Vincent Grafhorst / Kalahari in gold evening light, Kgalagadi Transfrontier Park, Botswana

Vincent Grafhorst / Rainbow over Kalahari, Kgalagadi Transfrontier Park, Botswana

Vincent Grafhorst / Sunset over plains, Kgalagadi Transfrontier Park, Botswana

Sergey Gorshkov / Leopard (Panthera pardus) feeding on Sitatunga (Tragelaphus spekii) prey at night, Botswana

Vincent Grafhorst / Little Grebe (Tachybaptus ruficollis) juvenile picking up insect from the water surface, Gaborone Game Reserve, Botswana

Richard Du Toit / Aerial view of burnt Mopane trees, Okavango delta, Botswana

Richard Du Toit / African elephant (Loxodonta africana) crossing river at dawn, Chobe NP, Botswana

Richard Du Toit / Aerial view of Makgadikgadi salt pans, Botswana

Richard Du Toit / Silhouette of African elephant (Loxodonta africana) on river bank at dawn, Chobe NP, Botswana

Richard Du Toit / Tourists in boat watching group of African elephants (Loxodonta africana) drinking from river, Chobe NP, Botswana, July 2009

Richard Du Toit / Dust track through Chobe NP, Botswana, April 2009

Richard Du Toit / Ground Hornbill (Bucorvus leadbeateri) juvenile, Chobe National Park, Botswana

Richard Du Toit / Nile Crocodile (Crocodylus niloticus) on shore, Chobe River, Chobe National Park, Botswana

Kevin Schafer / Date Palm (Phoenix reclinata) cluster, Okavango Delta, Botswana

Vincent Grafhorst / Sunset over the water filled Makgadikgadi Pans, Botswana

Vincent Grafhorst / Sun setting behind trees, Mabuakolobe Pan, Khutse Game Reserve, Botswana

Vincent Grafhorst / Meerkat (Suricata suricatta) sticking its head outside the burrow, Gweta, Makgadikgadi Pans, Botswana

Vincent Grafhorst / Ground Hornbill (Bucorvus leadbeateri) juvenile in the grass of the Khwai River floodplain, Moremi Game Reserve, Okavango Delta, Botswana

Vincent Grafhorst / Chacma Baboon (Papio ursinus) young males walking, Moremi Game Reserve, Okavango Delta, Botswana

Vincent Grafhorst / Yellow-billed Kite (Milvus aegyptius), Deception Valley, Central Kalahari Game Reserve, Botswana

Vincent Grafhorst / Zebra (Equus quagga) skin, Khama Rhino Sanctuary, Serowe, Botswana

Vincent Grafhorst / Zebra (Equus quagga) mane, Khama Rhino Sanctuary, Serowe, Botswana

Richard Du Toit / Sunset over river with new moon, Moremi Wildlife Reserve, Botswana.

Richard Du Toit / Chacma Baboon (Papio ursinus) juveniles play fighting, Chobe National Park, Botswana

Theo Allofs / Yellow-billed Stork (Mycteria ibis) foraging, Chobe River, Chobe National Park, Botswana

Theo Allofs / Leopard (Panthera pardus) looking for prey, Moremi Game Reserve, Okavango Delta, Botswana

Richard Du Toit / Chacma Baboon (Papio ursinus) at winter dawn, Chobe National Park, Botswana

Richard Du Toit / Hippopotamus (Hippopotamus amphibius), Khwai River, Botswana

Richard Du Toit / Hippopotamus (Hippopotamus amphibius) standing at the Khwai River, Botswana

Richard Du Toit / Hippopotamus (Hippopotamus amphibius) backside, summer, Chobe River, Chobe National Park, Botswana

Richard Du Toit / Southern Giraffe (Giraffa giraffa) browsing foliage, summer, Savuti, Chobe National Park, Botswana

Richard Du Toit / Yellow Mongoose (Cynictis penicillata) pair, summer, Savuti, Chobe National Park, Botswana

Richard Du Toit / Yellow Mongoose (Cynictis penicillata) summer, Savuti, Chobe National Park, Botswana

Richard Du Toit / Nile Crocodile (Crocodylus niloticus) swallowing a goose, summer, Moremi wildlife Reserve, Botswana

Richard Du Toit / Warthog (Phacochoerus africanus) and Red-billed Oxpecker (Buphagus erythrorhynchus) summer, Chobe National Park, Botswana

Richard Du Toit / Yellow-billed Stork (Mycteria ibis), Khwai River, Botswana

Richard Du Toit / African Elephant (Loxodonta africana) bull's trunk curling, spring, Chobe National Park, Botswana

Richard Du Toit / Hippopotamus (Hippopotamus amphibius) charging, Khwai River, Botswana

Richard Du Toit / Hippopotamus (Hippopotamus amphibius) bull threat yawning, Khwai River, Botswana

Richard Du Toit / Southern Giraffe (Giraffa giraffa) two juveniles, Savuti, Chobe National Park, Botswana

Richard Du Toit / Nile Crocodile (Crocodylus niloticus), Chobe River, Botswana

Richard Du Toit / Greater Blue-eared Glossy-Starling (Lamprotornis chalybaeus), Chobe River, Botswana

Richard Du Toit / Hippopotamus (Hippopotamus amphibius) threat yawning, Moremi Wildlife Reserve, Botswana

Richard Du Toit / Pied Kingfisher (Ceryle rudis) pair flying, Chobe River, Botswana

Richard Du Toit / Martial Eagle (Polemaetus bellicosus) immature, Chobe River, Savuti, Chobe National Park, Botswana

Richard Du Toit / Southern Yellow-billed Hornbill (Tockus leucomelas) portrait, Savuti, Chobe National Park, Botswana

Richard Du Toit / Comb Duck (Sarkidiornis melanotos) male taking flight, Savuti, Chobe National Park, Botswana

Richard Du Toit / Southern Giraffe (Giraffa giraffa) mother with two juveniles, Savuti, Chobe National Park, Botswana

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

Gerry Ellis / Hippopotamus (Hippopotamus amphibius) male displaying, Linyanti Swamp, Botswana

Richard Du Toit / Aerial view of Cattle egrets (Bubulcus ibis) flying over Buffalo herd (Syncerus caffer) Okavango Delta, winter, Botswana

Richard Du Toit / Aerial view of trees burnt by winter fires, Okavango Delta, Botswana

Richard Du Toit / African Elephant (Loxodonta africana) shooting water from its trunk, Chobe River, Botswana

Piotr Naskrecki / Sun Spider (Solifuga) does not have venom glands, their large mouthparts, or chelicerae, are strong enough to kill prey at least as big as themselves, diurnal, Botswana

Piotr Naskrecki / Sun Spider (Solifuga) does not have venom glands, their large mouthparts, or chelicerae, are strong enough to kill prey at least as big as themselves, diurnal, Botswana

Piotr Naskrecki / Long-nosed Reed Frog (Hyperolius nasutus) on stem, Okavango Delta, Botswana

Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus) clinging to reed, Okavango Delta, Botswana

Piotr Naskrecki / Grass Mantid (Hoplocorypha atra) silhouetted against setting sun, Botswana

Piotr Naskrecki / Grasshopper (Pnorisa squalus) portrait, Botswana

Piotr Naskrecki / Mayfly (Ephemeroptera) found under loosened bark of Elephant damaged Baobab, Botswana

Piotr Naskrecki / Dung Beetle (Scarabaeidae) amid grasses, Botswana

Piotr Naskrecki / Dung Beetle (Scarabaeidae) infested with Phoretic Mites, Botswana

Piotr Naskrecki / Dung Beetle (Scarabaeidae) on grasses, Botswana

Piotr Naskrecki / Harvester Termite (Hodotermes mossambicus) collecting grass for nest, Botswana

Piotr Naskrecki / Grass Mantid (Hoplocorypha atra) mimicking dry grass stalk feeding on grasshopper, Botswana

Piotr Naskrecki / An unidentified Grasshopper clinging to stem, Botswana

Piotr Naskrecki / Termite soldier, Botswana

Richard Du Toit / Aerial view of Okavango delta in winter, Botswana

Richard Du Toit / Aerial view of Okavango delta with man in traditional Mokoro boat, winter, Botswana

Richard Du Toit / Aerial view of Chobe river and floodplain, Botswana, with Caprivi strip, Namibia, in background

Richard Du Toit / Aerial view of Okavango delta, Botswana

Richard Du Toit / Aerial view of Buffalo herd {Syncerus caffer} on Okavango delta, winter, Botswana

Richard Du Toit / Aerial view of Cattle egrets {Bubulcus ibis} flying over Buffalo herd {Syncerus caffer} Okavango delta, winter, Botswana

Richard Du Toit / Aerial view of Chobe river and floodplain, Chobe NP, Botswana, with Caprivi Strip, Namibia, in background.

Richard Du Toit / Aerial view of Okavango river, Okavango delta, Botswana

Richard Du Toit / Tourists watching herd of African elephants {Loxodonta africana} from boat on Chobe river, Chobe NP, Botswana

Richard Du Toit / Tsetse fly trap, striped cloth impregnated with insecticide, Moremi WR, Okavango Delta, Botswana