A photo of a Schmidt’s red-tailed monkey taken on Jan. 22, 2018 at Smithsonian's National Zoo in Washington, D.C. reveals a heart-shaped nose. Native to central Africa, these small monkeys are characterized by white cheeks and a long tail and are primarily frugivores (fruit-eaters). Elements of Photography: rule of thirds, emotion and texture. (Photo by Megan Rummler)
A photo taken on Jan. 22, 2018 shows Baraka, a 400-pound adult male western lowland gorilla, rustling hay in the Great Ape House at Smithsonian's National Zoo in Washington, D.C. Elements of photography: decisive moment, rule of thirds, movement and mood. (Photo by Megan Rummler)
Jan Lipkin, a zoo volunteer directs visitors at Smithsonian's National Zoo in Washington, D.C. on Jan. 22, 2018. Elements of photography: sense of place, emotion and rule of thirds. (Photo by Megan Rummler)
A visitor at Smithsonian's National Zoo in Washington, D.C. follows an animal print pathway on Jan. 22, 2018. These kinds of wide paths allow for wheelchairs and electronic vehicles. Elements of photography: linear perspective, leading lines, scale and pop of color. (Photo by Megan Rummler)
The Speedwell Foundation Conservation Carousel—powered by 162 solar panels—runs on Jan. 22, 2018 at Smithsonian's National Zoo in Washington, D.C. The carousel features 58 hand-carved and painted animals, many of which represent endangered species. Elements of photography: linear perspective, repetition and color. (Photo by Megan Rummler)
A photo of The Reptile Discovery Center at Smithsonian's National Zoo in Washington, D.C. taken on Jan. 22, 2018. The center is home to over 70 reptiles and amphibians. Elements of photography: scale, sense of place and rule of thirds. (Photo by Megan Rummler)
A photo of a Northern pine snake shedding old skin taken on Jan. 22, 2018 at the Reptile Discovery Center at Smithsonian's National Zoo in Washington, D.C. Elements of Photography: selective focus, rule of thirds and light. (Photo by Megan Rummler)
Visitors tour crowd-free on Jan. 22, 2018 at Smithsonian's National Zoo in Washington, D.C. Elements of Photography: scale, mood, leading lines and negative space. (Photo by Megan Rummler)
A photo of an African lion at rest taken at the Great Cats exhibit on Jan. 22, 2018 at Smithsonian's National Zoo in Washington, D.C. Elements of Photography: scale. (Photo by Megan Rummler)
A photo of a Northern pine snake post-shed taken on Jan. 22, 2018 at the Reptile Discovery Center at Smithsonian's National Zoo in Washington, D.C. Elements of Photography: framing, light and texture. (Photo by Megan Rummler)
