Cyril Ruoso / Red Deer (Cervus elaphus) stag bugling during autumn rutting season, Denmark

Heidi & Hans-Juergen Koch / Dione Rat Snake (Elaphe dione) beginning to shed its skin, native to Europe and Asia

Heidi & Hans-Juergen Koch / Colubrid Snake (Elaphe sp) two making initial contact, using tongue (Nasovomeral sense) to identify friend, enemy, or prey

Willi Rolfes/ BIA / Red Deer (Cervus elaphus) stag near herd, Denmark

Willi Rolfes/ BIA / Red Deer (Cervus elaphus) stag running, Denmark

Willi Rolfes/ BIA / Red Deer (Cervus elaphus) stag calling next to female, Denmark

Sebastian Kennerknecht / Iberian Red Deer (Cervus elaphus hispanicus) stag, Sierra de Andujar Natural Park, Sierra de Andujar, Sierra Morena, Andalusia, Spain

Ingo Arndt / Cornsnake (Elaphe guttata), Everglades National Park, Florida

Pete Oxford / Cornsnake (Elaphe guttata) climbing up tree, Little Saint Simon's Island, Georgia

Pete Oxford / Yellow Rat Snake (Elaphe obsoleta quadrivittata) in defensive posture, Little Saint Simon's Island, Georgia

Donald M. Jones / Yellow Rat Snake (Elaphe obsoleta quadrivittata) in defensive posture, Sarasota, Florida

Cyril Ruoso / Red Deer (Cervus elaphus) stag in autumn rutting season, Denmark