Thomas Marent / Mandrill (Mandrillus sphinx) male in defensive posture, Lekedi Natural Preserve, Gabon

Thomas Marent / Mandrill (Mandrillus sphinx) males in tall grass, Lekedi Natural Preserve, Gabon

Thomas Marent / Mandrill (Mandrillus sphinx) male, Lekedi Natural Preserve, Gabon

Scott Leslie / Trail through forest, Kissimmee Prairie Preserve State Park, Florida

Donald M. Jones / Moose (Alces alces) bull lip-curling, Denali National Park, Alaska

Alex Hyde / Common Wasps (Vespula vulgaris) feeding on a pot of jam, photographed against a white background. Derbyshire, UK. September.

Donald M. Jones / Dall's Sheep (Ovis dalli) rams, Denali National Park, Alaska

Donald M. Jones / Dall's Sheep (Ovis dalli) rams, Denali National Park, Alaska

Pete Oxford / Eastern diamondback rattlesnake (Crotalus adamanteus) close up of rattle, The Orianne Indigo Snake Preserve, Telfair County, Georgia USA, captive

Pete Oxford / Bald cypress trees (Taxodium distichum) The Orianne Indigo Snake Preserve, Telfair County, Georgia, USA

Pete Oxford / Eastern indigo snake (Drymarchon couperi) The Orianne Indigo Snake Preserve, Telfair County, Georgia, USA, threatened species, captive

John Abbott / Snakefly (Agulla sp) in flight, Wild Basin Preserve, Texas, USA, April