Emanuele Biggi / Malaysian horned frog (Pelobatrachus nasutus) looking forward, Kubah National Park, Sarawak, Borneo.

David Weiller / Long-nosed horned frog (Pelobatrachus nasutus) juvenile moving from front view to side view, Crocker Range, Sabah, Borneo, July.

David Weiller / Long-nosed horned frog (Pelobatrachus nasutus) juvenile close up portrait, closing its eyes, showing the nictitating membrane, Crocker Range, Sabah, Borneo, July.

David Weiller / Long-nosed horned frog (Pelobatrachus nasutus) juvenile side profile on the forest floor, Crocker Range, Sabah, Borneo, July.

David Weiller / Long-nosed horned frog (Pelobatrachus nasutus) juvenile hopping forward, before jumping out of frame, Crocker Range, Sabah, Borneo, July.

David Weiller / Long-nosed horned frog (Pelobatrachus nasutus) juvenile breathing, Crocker Range, Sabah, Borneo, July.