Nigel Cattlin / Large rose sawfly (Arge pagana) larvae feeding on ornamental rose leaves in summer, Berkshire, September

Konrad Wothe / Larvae of Birch sawfly (Craesus septentrionalis) in alarm position, Upper Bavaria, Germany. October.

David Perpinan / Oystercatcher (Haematopus ostralegus) incubating eggs on nest, alarm calling as a predator flies overhead, Scotland,UK, June.

Remi Masson / Eurasian beaver (Castor fiber) carrying branches back to lodge, dropping them when alarmed. River Rhone, Rhone-Alpes, France, June.

Andrew Parkinson / Brown hare (Lepus europaeus) adult female (mid-air) leaping out of her form in snow, away from male, Derbyshire, UK. March.

Andrew Parkinson / Brown hare (Lepus europaeus) adult female skidding to a halt in a snow covered field, Derbyshire, UK, March.

Ammonite / White-throated capuchins (Cebus capucinus) alarm calling, Santa Rosa National Park, Costa Rica.

George Sanker / Male North American red squirrel (Tamiasciurus hudsonicus) alarm calling, Yellowstone National Park, Wyoming, USA, June

Wild Wonders of Europe / Benvie / Alpine marmot (Marmota marmota) giving an alarm call, Guillestre, Queyras, France, June 2009

David Hall / Blackfoot firefish (Parapterois heterurus), blue stripes on pectoral fin when threatened, on gravel. Pantar, Alor Archipelago, Indonesia.

Karine Aigner / Greater roadrunner (Geococcyx californianus) with open beak, portrait. Texas, USA. June.

Yashpal Rathore / Bengal tiger (Panthera tigris) sub-adult female with deer running away in alarm. Tadoba National Park, India