National Geographic's nature photographer of the year - the best animal portraits

These are some of the best animal portraits entered into the 2016 National Geographic nature photographer of the year contest. Mighty buffalo, shivering penguins and hiding owlets all feature in the entries for the ‘Animals’ category. Photographers have until 4 November to enter the competition and have a chance of winning a 10-day trip for two to the Galápagos with National Geographic Expeditions and two 15-minute image portfolio reviews with National Geographic photo editors.