A leopard seal preys on a chinstrap penguin.
Namaqua desert chameleon, Gobabeb, Namibia.
Strawberry poison dart/arrow frog (Dendrobates pumilio) on leaf, Costa Rica.
Horned lizard lying flat on back, feigning death -- a behavior tactic against hog-nosed snake, in Tucson, Arizona.
Short-horned chameleon (Calumma brevicornis) catching insect prey with its tongue, Andasibe-Mantadia National Park, Madagascar.
Two Komodo dragons fighting, Komodo Archipelago, Indonesia.
Sailfish preying on a shoal of fish off Mexico.
Hippopotamus fighting, territorial dispute in river.
Sumatran orangutan mother and playful baby, Sumatra, Indonesia
Female Japanese macaque with baby taking refuge from cold weather in hot spa, Japan.
A dragon's blood tree, from Socotra, Yemen.
Filming underneath the ice at McMurdo Sound, Antarctica.
Diver cameraman faces Humboldt squid at night, Baja California.
Cleaner shrimps cleaning fish of parasites.
Cheetah, running at full speed, East Africa.
Looking down on starfish, McMurdo Sound, Antarctica.
Three male Cheetahs feeding on ostrich that they have learned to hunt, Lewa Wildlife Conservancy, Kenya.
Coastal grizzly bear fishing for salmon in water, Katmai National Park and Preserve, Alaska.
Stoat/Ermine (Mustela erminea) two juveniles playing, Aran valley, Pyrenees, Spain.
Male Dawson bees surround female in nest, Australia.
Frog with damselfly prey, Germany.
Frog makes leap to catch damselfly, Germany.
Monarch butterflies on migration, Mexico.
Vogelkop bowerbird at bower nest, West Papua.
Lesser flamingo mass dancing ritual, Lake Bogoria, Kenya, East Africa.
Short horned chameleon (Calumma brevicornis) close up of face with eyes facing forward and tongue extended, Andasibe-Mantadia National Park, Madagascar.
Clown anemonefish in anemone, Indonesia.
Copper sharks feeding on sardine shoals off South Africa.
Humpback whale breaches at surface, Tonga.
Sengi running along maintained trail system.
Weddell seal (Leptonychotes weddellii) surfaces in the waters along the western Antarctic Peninsula, Antarctica, Southern Ocean.
Spotted Hyena against grass in evening light.
African straw-colored fruit bats in flight, Kasanka National Park, Zambia.
Close up of Komodo dragon feeding on buffalo carcass, Komodo Archipelago, Indonesia.
Two Caiman fishing in river, mouths open to catch fish, Pantanal, Brazil.
Discovery Channel's magnum opus 'Life' begins Sunday evening. Here's an advance glimpse at the incredible, high-resolution odyssey to document critters around the globe. Images courtesy of Discovery Channel.