Juergen Freund / Skeleton of dead cow propped up in desert. Baja, California, Mexico

Juergen Freund / Volunteers mixing eggs and sperm from salmon in hatchery, Canada

Solvin Zankl / Face of Whitemargin stargazer {Uranoscopus sulphureus} Lembeh, Sulawesi

Todd Pusser / Leopard seal {Hydrurga leptony} beheading Chinstrap penguin, Antarctica.

Anup Shah / Spotted hyaena predating newborn Thomson's gazelle, Serengeti NP, Tanzania {Crocuta crocuta}

Mary McDonald / Gaboon viper head close-up {Bitis gabonica} captive

Anup Shah / Lions attacking Hippopotamus, Masai Mara, Kenya. Ssequence 3 of 5

Jabruson / Female King baboon spider feeds on mouse kill, Tsavo NP Kenya

PREMAPHOTOS / Pupae of parasitic wasp {Braconidae family} on hawkmoth caterpillar host, Peru, South America

Richard Du Toit / Lioness head covered in flies {Panthera leo} Masai Mara, Kenya

Jabruson / Human skulls of Tutsi victims, genocide memorial, Ntarama church, Nyamata, Rwanda

Anup Shah / Zebra kicks out at attacking Nile crocodile {Crocodylus niloticus} Mara river, Masai Mara, Kenya