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

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

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

Rod Williams / Black mamba (Dendroaspis polylepis) captive, from Southern Africa

Tony Phelps / Green mamba {Dendroaspis angusticeps} from KwaZuluNatal, South Africa.

Tony Phelps / Eastern green mamba {Dendroaspis angusticeps} Captive from KwaZuluNatal, South Africa

Tony Phelps / Black mamba {Dendroaspis polylepis} Captive from KwaZuluNatal, South Africa.

Rod Williams / Eastern Green Mamba (Dendroaspis angusticeps) captive, from Sub-Saharan Africa

PREMAPHOTOS / Western green mamba {Dendroaspis viridis} snake drinking from pool in gallery forest, Gambia

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

Michael D. Kern / Eastern green mamba snake {Dendroaspis angusticeps} captive, Eastern Africa

LYNN M. STONE / Eastern green mamba {Dendroaspis angusticeps} captive, from East Africa

LYNN M. STONE / Eastern green mamba {Dendroaspis angusticeps} captive, from East Africa

Mary McDonald / Eastern green mamba {Dendroaspis angusticeps} captive, from East Africa

Mary McDonald / Eastern green mamba (Dendroaspis angusticeps) captive

Mary McDonald / Eastern green mamba (Dendroaspis angusticeps) captive

Rod Williams / Two Western green mambas {Dendroaspis viridis} captive, found in West Africa

LYNN M. STONE / Black mamba {Dendroaspis polylepis} captive

Staffan Widstrand / Western green mamba {Dendroaspis virids} captive

Tony Phelps / Eastern green mamba {Dendroaspis angusticeps} South Africa

Tony Phelps / Eastern green mamba {Dendroaspis angusticeps} South Africa

Luiz Claudio Marigo / Eastern green mamba {Dendroaspis angusticeps} Arabuko-Sokoke forest, Kenya

Peter Blackwell / Black mamba {Dendroaspis polylepis} moving along brach in tree, Maasai Mara, Kenya, Africa