Ken Preston-Mafham/PREMAPHOTOS / Tropical / Cascabel rattlesnake (Crotalus durissus) flicking out its tongue at night in tropical dry forest, Costa Rica

Colin Preston / Citron (lemon coral) goby (Gobiodon citrinus) Red Sea

Ken Preston-Mafham/PREMAPHOTOS / File-eared Tree Frog / Stripped Treefrog / Yellow Foam-nest Frog (Polypedates leucomystax), pair making foam nest in rainforest, Malaysia

Colin Preston / Wood mice {Apodemus sylvaticus} UK captive

Colin Preston / Juvenile American bald eagle {Haliaeetus leucocephalus} captive, UK

Colin Preston / Wood mouse {Apodemus sylvaticus} UK, captive

Colin Preston / Yellow-necked mouse {Apodemus flavicollis} on flowerpot, captive, UK.

Colin Preston / Red kangaroo {Macropus rufus} Australia.

Colin Preston / Harvest mouse on ripe wheat ear {Micromys minutus} UK

Colin Preston / Cretzschmar's Bunting {Emberiza caesia} male singing, Greece

Colin Preston / Common buzzard {Buteo buteo} with rabbit prey, UK

Colin Preston / Northern / Red Necked Phalarope {Phalaropus lobatus} male, UK