Danny Green / Snow Monkey (Macaca fuscata) with snow covered paw in front of mouth, Nagano, Japan, February

Ole Jorgen Liodden / L'Hoest's monkey (Cercopithecus lhoesti) feeding on leaves, Rwanda.

Claudio Contreras / Eastern cottontail (Sylvilagus floridanus) cleaning face, Laredo Borderlands, Texas, USA. April

Anup Shah / Japanese Macaque (Macaca fuscata) female covering her mouth with her hand, Jigokudani Monkey Park, Japan