Maxime Aliaga / Two Hyacinth macaws (Anodorhynchus hyacinthinus) landing on branch, one squawking at the other, Pantanal, Mato Grosso, Brazil.

Maxime Aliaga / South American tapir (Tapirus terrestris) foraging in undergrowth at night, Atlantic rainforest, Sao Paulo, Brazil. Endangered

Lucas Bustamante / Pinocchio lizard (Anolis proboscis) male, resting on moss-covered log, Mindo, Pichincha, Ecuador.

Lucas Bustamante / Galapagos sea lion (Zalophus wollebaeki) resting on rocks, Santiago Island, Galapagos Islands. Endangered.

Lorraine Bennery / Golden-crowned sifaka (Propithecus tattersalli) leaping through forest canopy, near Daraina, Madagascar. Critically endangered.

Jen Guyton / Mountain gorilla (Gorilla beringei beringei) feeding, head portrait, Bwindi Impenetrable Forest, Uganda. Endangered.

Jen Guyton / Mountain gorilla (Gorilla beringei beringei) female with two infants resting in forest vegetation, Volcanoes National Park, Rwanda. Endangered.

Inaki Relanzon / Iberian lynx (Lynx pardinus) resting, La Mancha, central Spain. July. Endangered.

Inaki Relanzon / Black-browed albatrosses (Thalassarche melanophrys) pair, mutual preening on nest with chick, nesting colony in background, Falkland Islands, Atlantic Ocean. February.

Inaki Relanzon / Rockhopper penguin (Eudyptes chrysocome) jumping out of the surf, Falkland islands, Atlantic Ocean.

Inaki Relanzon / White-headed duck (Oxyura leucocephala) on water in wetland, La Mancha, central Spain. April.

Franco Banfi / Sperm whale (Physeter macrocephalus) socializing and opening its mouth. Dominica, Caribbean Sea.