Eric Baccega / Western lowland gorilla (Gorilla gorilla gorilla) silverback male, portrait. Beauval Zoo Parc, France. Captive.

Nick Upton / Linda Rennie sexing an adult Harvest mouse (Micromys minutus), one of a population being reared in captivity ahead of a reintroduction, Lifton, Devon, UK, May. Model released.

Ann & Steve Toon / Black rhinoceros horns (Diceros bicornis) at Glasgow Museums Resource Centre, awaiting DNA analysis.