Edwin Giesbers / Eastern green mamba {Dendroaspis angusticeps} skin detail, captive, from East Africa

Edwin Giesbers / Eastern green mamba {Dendroaspis angusticeps} head portrait, captive, from East Africa;

Edwin Giesbers / Eastern green mamba {Dendroaspis angusticeps} strike pose, captive, from East Africa

Edwin Giesbers / Eastern green mamba {Dendroaspis angusticeps} head portrait, captive, from East Africa

Michael D. Kern / Western green mamba snakes {Dendroaspis viridis} captive, Eastern Africa

Ingo Arndt / Eastern green mamba {Dendroaspis angusticeps} captive

Edwin Giesbers / Eastern green mambas (Dendroaspis angusticeps) captive, from East Africa.

Edwin Giesbers / Eastern green mambas (Dendroaspis angusticeps) one with mouth wide open, captive, from East Africa.

Rod Williams / Eastern Green Mamba (Dendroaspis angusticeps) head portraits. Captive, found in Sub-Saharan Africa.

Michael D. Kern / Black mamba (Dendroaspis polylepis) with mouth open and fangs exposed, captive, from Africa

James Brickell / Black Mamba (Dendroaspis polylepis ) swimming in the Oliphants River, Houdspruit, South Africa

Edwin Giesbers / Eastern green mamba {Dendroaspis angusticeps} captive, from East Africa