Jen Guyton / Night adder (Causus defilippi) Greater Gorongosa Ecosystem, Mozambique. Controlled conditions.

Jen Guyton / Night adder (Causus defilippi) on white background. Gorongosa National Park, Mozambique. Controlled conditions.

Jen Guyton / Night adder (Causus defilippi) basking on a rock after light rain. from the Greater Gorongosa Ecosystem, Mozambique.

Jen Guyton / Snouted night adder (Causus defilippi) Greater Gorongosa Ecosystem, Mozambique. Controlled conditions.

Jen Guyton / Nght adder (Causus defilippi) basks on a rock after light rain. Greater Gorongosa Ecosystem, Mozambique,

Florian Möllers / Liechtenstein's Night Adder (Causus lichtensteinii). Budongo Forest Reserve, Masindi, Uganda, Africa. December

Florian Möllers / Liechtenstein's Night Adder (Causus lichtensteinii) on forest floor, Budongo Forest Reserve, Masindi, Uganda, Africa. December

Tony Phelps / Rhombic night adder (Causus rhombeatus) portrait, Kysna, Western Cape, South Africa

Michael & Patricia Fogden / Rhombic Night Adder (Causus rhombeatus) with tongue extended to smell, Africa