Rolf Nussbaumer / Oxlip flower {Primula elatior} Switzerland

Jane Burton / Domestic Cat {Felis catus} Turkish Van kitten among white dasies with pink Primulas.

Jane Burton / Domestic Cat {Felis catus} Turkish Van kitten among white dasies with pink Primulas.

Gary Smith / Primulas and Polyanthus planted in decorative buckets with terracotta pots in greenhouse potting shed scene, UK.

Philippe Clement / Oxlip flowers {Primula elatior} France

Philippe Clement / Oxlip in flower {Primula elatior} France

Bernard Castelein / Oxlip flowers {Primula elatior} Belgium

Tony Evans / Oxlips flowering in woodland {Primula elatior} Suffolk, UK

Bernard Castelein / Oxlip plants in flower {Primula elatior} Belgium, Groot Schietveld NR

Bernard Castelein / Oxslip flowers {Primula elatior} Belgium

Bernard Castelein / Oxslip flowers {Primula elatior} Belgium

Eric Baccega / Siamang Gibbon (Hylobates syndactylus) vocalising, vocal pouch inflated, captive, native to forests of Malaysia, Sumatra and Thailand

Rod Williams / Golden poison dart frog (Phyllobates terribilis) with throat pouch / vocal sacs expanded. Captive occurs Colombia. Endangered species

Eric Baccega / Two Siamang Gibbons (Hylobates / Symphalangus syndactylus) calling, vocal pouches inflated, Endangered, captive, from SE Asia

Michael & Patricia Fogden / Darwin's Frog (Rhinoderma darwinii) male on forest floor with vocal sac full of young, austral Beech forest, Chiloe Island, Chile

Konrad Wothe / Siamang (Symphalangus syndactylus) vocalizing with vocal pouch inflated, native to southeast Asia