Shin Yoshino / Black-tailed Prairie Dog (Cynomys ludovicianus) pair touching noses for identification, Colorado

Jim Brandenburg / Black-tailed Prairie Dog (Cynomys ludovicianus) pair nuzzling to communicate, South Dakota

Cyril Ruoso / Alpine Marmot (Marmota marmota) adults allogrooming, looks like one whispering in the other's ear, France

Konrad Wothe / Black-tailed Prairie Dog (Cynomys ludovicianus) baby identifying its parent, Arizona

Konrad Wothe / Black-tailed Prairie Dog (Cynomys ludovicianus) baby identifying its parent, Arizona