Mark Taylor / Black and white Border collie looking sideways at black and white kitten.

Anup Shah / Bornean Orangutan (Pongo pygmaeus wurmbii) female baby 'Petra' aged 12 months. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia. July 2010. Rehabilitated and released (...

Steven Kazlowski / Great grey / Northern shrike {Lanis excubitor} juvenile perching on branch, looking sideways, Denali National Park, Alaska, USA

Joel Sartore / Photo Ark / Guinea baboon (Papio papio) male, looking sideways, head portrait, Indianapolis Zoo. Captive, occurs in western Africa.

Joel Sartore / Photo Ark / Lesser grison (Galictis cuja cuja) looking sideways, portrait, Santiago Zoo. Captive.

Joel Sartore / Photo Ark / Common spotted cuscus (Spilocuscus maculatus) looking sideways, with tail coiled, portrait, Jakarta, Indonesia. Captive.

Joel Sartore / Photo Ark / Greater forest wallaby (Dorcopsis hageni) looking sideways, portrait, Albuquerque BioPark Aquarium, USA. Captive.

Joel Sartore / Photo Ark / Eastern bettong (Bettongia gaimardi) looking sideways portrait, Moonlit Sanctuary Wildlife Park. Captive.