White

Chinstrap Penguin

Strapped for the ice, built for the surf

Ibis

Probe, sweep, and thrive in wetlands

Frigatebird

Born to soar, built to steal

Cuttlefish

Camouflage geniuses with built-in buoyancy

Spiny Dogfish

Two spines. Slow life. Big schools.

Macaroni Penguin

Big colony. Bigger crest.

Grouse

Masters of the lek and the snow

Fin Whale

The fast rorqual with a split-color jaw

Tropicbird

Streamers of the tropical seas

Oyster

Reef builders that clean the coast

Barracuda

Silver speedsters with a bite

Avocet

Curved bill, clean sweep.

Malayan Tiger

Malayan Tiger: last shadow of the forest

Siberian Tiger

Taiga's striped heavyweight

Crane

Dance, Trumpet, Migrate

Snail

One class, a thousand ways to snail.

Common Buzzard

The countryside's master of thermals

Manta Ray

Wings of the sea, built to filter

Dodo

Mauritius' lost pigeon giant

Emperor Tamarin

The rainforest monkey with a moustache

Cotton-top Tamarin

Colombia's crested forest acrobat

Geoffroys Tamarin

Panama's cooperative twin-raiser

Pied Tamarin

Manaus' black-and-white forest neighbor

Sparrow

Small birds, big social networks