Juvenile male proboscis monkey (Nasalis larvatus), Labuk Bay Proboscis Monkey Sanctuary, Sabah, Borneo, Malaysia, Southeast Asia, Asia

Young male lion (Panthera leo), Serengeti National Park, Tanzania, East Africa, Africa

Young male lion (Panthera leo), Serengeti National Park, Tanzania, East Africa, Africa

Young male Bornean orangutan (Pongo pygmaeus), Semenggoh Rehabilitation Center, Sarawak, Borneo, Malaysia, Southeast Asia, Asia

Common ostrich (Struthio camelus) male with two chicks, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

A male New Zealand sea lion (Hooker's sea lion) guards juvenile females of the species on Allans Beach, Otago Peninsula, Otago, South Island, New Zealand, Pacific

A male New Zealand sea lion (Hooker's sea lion) guards juvenile females of the species on Allans Beach, Otago Peninsula, Otago, South Island, New Zealand, Pacific

Male southern elephant seal pups (Mirounga leonina) mock-fighting, Gold Harbor, South Georgia, Polar Regions

Northern black korhaan (Eupodotis afraoides), immature male, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Male lion (Panthera leo) juvenile, Moremi, Okavango Delta, Botswana, Africa

Young male lion (Panthera leo) on buffalo kill, Chobe National Park, Botswana, Africa

A male lion (Panthera leo) with its cub, Tsavo, Kenya, East Africa, Africa

A sub-adult male lion (Panthera leo) feeding on a buffalo kill, Tsavo, Kenya, East Africa, Africa

Two flying-foxes in care, juvenile male little red flying-fox (Pteropus scapulatus) and adult female black fying-fox (Pteropus alecto), Hopkins Creek, New South Wales, Australia, Pacific

european lynx, felis lynx, behind tree trunk, bohemia, europe

scottish wildcat: felis silvestris young male wildlife par k, kirkcudbright

Juvenile little red Flying-fox (Pteropus scapulatus) male approximately 23 weeks old in care, Hopkins Creek, New South Wales, Australia, Pacific

european lynx, felis lynx, portrait of young, bohemia, europe

South American Sea Lion (Otaria flavescens) hauled out on small rocky islet just outside Ushuaia, Beagle Channel, Argentina

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon on the Pacific side of the Baja Peninsula, Baja California Sur, Mexico

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon on the Pacific side of the Baja Peninsula, Baja California Sur, Mexico

A mother black bear (Ursus americanus) with two cubs near Mendenhall Glacier outside of Juneau, Southeast Alaska, USA. Pacific Ocean

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico

Sperm Whale, Physeter macrocephalus, imature male, penis display underwater in the northern Gulf of California, Mexico

Chinstrap penguin (Pygoscelis antarctica) chick head detail at colony on Useful Island near the Antarctic Peninsula. There are an estimated 2 million breeding pairs of chinstrap penguins in the Antarctic peninsula region alone, perhaps as many as 7.5 million breeding pairs in all of Antarctica. Their name derives from the narrow black band under their heads which makes it appear as if they are wearing black helmets, making them one of the most easily identified types of penguin. Other names for them are "Ringed Penguins", "Bearded Penguins", and "Stonecracker Penguins" due to their harsh call. They grow to 68 cm (27 in). The average adult weight of a Chinstrap Penguin is 4.5 kg (10 lbs). Weight can range from 3 to 6 kg (6.6-13.2 lbs), with males being slightly larger and weight varying based on where the penguin is in the breeding cycle. Their diet consists of krill, shrimp, and fish. On land they build circular nests from stones, and lay two eggs, which are incubated by both the male and the female for shifts of five to ten days. They can also breed on icebergs, though they prefer non-icy conditions. The chicks hatch after about 35 days, and have fluffy gray backs and white fronts. The chicks stay in the nest for 20?30 days before they go to join a creche. At around 50?60 days old, they moult, gaining their adult plumage and go to sea. The Chinstrap Penguin was first described by German naturalist Forster in 1781. Its specific epithet was often seen as antarctica, however a 2002 review determined the genus Pygoscelis was masculine, and hence the correct binomial name is Pygoscelis antarcticus.

Captive Male Siberian Huskies at the Siberian K9 Kennel and Lodge, Petropavlovsk (Kamchatka) Russia, Asia. MORE INFO: Dogs used for sled pulling and races.

Bengal Tiger (Panthera Tigris Tigris), wild, adult male, critically endangered. Bandhavgarh Tiger Reserve, India

Wild Adult Female and Baby Orangutans (Pongo Pygmaeus). Endangered. Sepilok Orangutan Rehabilitation Centre, Sandakan, Sabah, Malaysia

Antarctic fur seal pup (Arctocephalus gazella) near the abandoned whaling station at Stromness Bay on South Georgia, Southern Ocean

Juvenile great frigate bird (Fregata minor) with inflated gular on North Seymour Island in the Galapagos Island Group, Ecuador. Pacific Ocean

european lynx, felis lynx, sitting in grass, bohemia, europe

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon on the Pacific side of the Baja Peninsula, Baja California Sur, Mexico

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico

Bengal Tiger (Panthera tigris tigris) wild male cub, critically endangered. Bandhavgarh Tiger Reserve, India.

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico

Antarctic fur seal pup (Arctocephalus gazella) near the abandoned whaling station at Stromness Bay on South Georgia, Southern Ocean

Transporting Pigs, Transporting Pigs On A Motorcycle, Hanoi, Vietnam, Southeast Asia

european lynx, felis lynx, in mixed forest, bohemia, europe

South American Sea Lion (Otaria flavescens) hauled out on small rocky islet just outside Ushuaia, Beagle Channel, Argentina

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon on the Pacific side of the Baja Peninsula, Baja California Sur, Mexico

A mother black bear (Ursus americanus) with two cubs near Mendenhall Glacier outside of Juneau, Southeast Alaska, USA. Pacific Ocean

Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island in the Southern Ocean

Adult male yellow warbler (Dendroica petechia aureola) in the Galapagos Island Archipelago, Ecuador

Young adult bull southern elephant seal (Mirounga leonina) holding a young pup's head underwater on South Georgia Island in the Southern Ocean

Wild Adult Male and Female, Steller sea lions (Eumetopias jubatus), and Northern Fur Seal, endangered, colony, rookery, haul out, raft, above water.Bering Islands (Bering Sea) Russia, Asia. MORE INFO: This sea lion in the largest member of the eared seals.

African Lion (Panthera Leo) wild male cub. Samburu National Reserve, Kenya.

european lynx, felis lynx, young amongst rock, bohemia, europe

Bengal Tiger (Panthera Tigris Tigris), wild, adult male, critically endangered. Bandhavgarh Tiger Reserve, India

Staff from the Lindblad Expedition Ship National Geographic Explorer with an elephant seal pup on South Georgia Island, Southern Ocean

African Lion (Panthera Leo) wild male cub. Phinda Reserve, South Africa.

Bower of immature male satin bowerbird (Ptilonorhynchus violaceus), Hopkins Creek, New South Wales, Australia, Pacific

Bengal Tiger (Panthera tigris tigris), wild male cub, critically endangered. Bandhavgarh Tiger Reserve, India.

Bengal Tiger (Panthera Tigris Tigris), wild, 12 month old cub, critically endangered. Bandhavgarh Tiger Reserve, India

King penguin (Aptenodytes patagonicus) breeding and nesting colony on South Georgia Island, Southern Ocean.

Chinstrap penguin (Pygoscelis antarctica) parent and chick at breeding colony on Useful Island near the Antarctic Peninsula

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico

Guano-covered chinstrap penguin (Pygoscelis antarctica) chick at breeding colony on Useful Island near the Antarctic Peninsula

Bengal Tiger (Panthera Tigris Tigris), wild, adult male, critically endangered. Bandhavgarh Tiger Reserve, India

African Lion (Panthera Leo) wild cub. Samburu National Reserve, Kenya.

Waved albatross (Diomedea irrorata) chick almost ready for flight at breeding colony on Espanola Island in the Galapagos Island Archipelago, Ecuador

Adult Adelie penguin (Pygoscelis adeliae) adult feeding chicks near the Antarctic Peninsula, Antarctica.

Adult male polar bear (Ursus maritimus) on multi-year ice floes in the Barents Sea off the eastern coast of Spitsbergen in the Svalbard Archipelago, Norway

California gray whale (Eschrichtius robustus) calf with excited whale watchers in San Ignacio Lagoon, Baja California Sur, Mexico

Guest from the Lindblad Expedition ship National Geographic Explorer with gentoo penguin chick in Antarctica

Ostrich (Struthio camelus) . Female with two chicks on the ridge of a grass-grown sand dune. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Ostrich (Struthio camelus) . Female on the right and male on the ridge of a grass-grown sand dune. In between them a chick. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Ostrich (Struthio camelus) . Female on the left and male on the ridge of a grass-grown sand dune. Behing them a chick. Kalahari Desert, Kgalagadi Transfrontier Park, South Africa, Africa

Close up of little yellow ducklings in a white wicker basket. Small boy in a white t-shirt is holding a pottle with cute pet nestlings. Child and birds. Summer background. Copy space

Ostrich (Struthio camelus) flock of young chicks with male adult animal foraging on green grassland in the Kalahari. Kalahari National Park, South Africa, Africa

Little boy and little yellow ducklings swimming in washtub in the garden. Small boy in a white t-shirt with cute pets. Child and birds. Summer background. Copy space

Painted Bunting (Passerina ciris), immature male on blooming Soaptree Yucca (Yucca elata), Lake Corpus Christi, South Texas, USA

Toddler Making Funny Faces At The Camera And Putting His Fingers in His Mouth, Langley, British Columbia, Canada

Tk0604, Thomas Kitchin; Grizzly Bear. Five-Year Old Male. Spring. Rocky Mountains. Ursus Arctos.

NIGERIA Agriculture Man tending young palm oil trees African Male Men Guy Nigerian Western Africa Male Man Guy Farming Agraian Agricultural Growing Husbandry Land Producing Raising Immature

Juvenile male Sparrowhawk with prey, Northern Vosges France

Scaly-breasted munias on a branch, Royal Bardia NP Nepal

Sub adult male lion in the tall grass, Kalahari Botswana

Common Shelduck (Tadorna tadorna), side view of an immature male swimming in a lake, Campania, Italy