Bat in Flight — Gray

1600 × 1200

Gorilla in Profile — Black, Dramatic, Photograph

1942 × 1267

Tiger in Profile — Black, Dramatic, Photograph, Stripes

1600 × 900

Gorilla Face Close-up — Black, Dramatic, Photograph, Hand

1024 × 768

Two Rhinoceroses Facing — Brown

1024 × 768

Rhinoceros Head — Brown, Dramatic

2560 × 1600

Koala Eating Eucalyptus — Gray, Natural

1600 × 1200

National Geographic Logo — Black, Minimalist

1920 × 1080

National Geographic Logo — Black

1680 × 1050

Two Koalas on Black — Gray

1280 × 800

National Geographic Logo

1920 × 1200

Koala on Tree Branch — Gray, Calm, Afternoon, Photograph, Tree Branch, Sky

1024 × 768