Robert Thompson / Cameroon bush viper (Atheris broadleyi) captive, occurs in West Africa.

Robert Thompson / Cameroon bush viper (Atheris broadleyi) captive occurs in West Africa.

Robert Thompson / Variable bush viper (Atheris squamigera) portrait, endemic to west and central Africa

Michael D. Kern / Kaleidescope image formed from photograph of Bush viper (Atheris squamigera). See 01499520 for the original.

Michael D. Kern / Kaleidoscope pattern formed from picture of Variable Bush Viper (Atheris squamigera) face and scales.

Michael D. Kern / Bush viper (Atheris squamigera) captive, occurs in West and Central Africa.

Michael D. Kern / African / Variable Bush Viper (Atheris squamigera) captive, from West and Central Africa

Michael D. Kern / African / variable Bush Viper (Atheris squamigera) captive from West and Central Africa

Michael D. Kern / African bush viper (Atheris squamigera) captive, from Africa

Michael D. Kern / African bush viper (Atheris squamigera)

Michael D. Kern / Variable bush viper snake {Atheris squamigera} captive, occurs equatorial Africa

Tony Phelps / Green bush viper {Atheris squamigera} occurs in West Kenya