PIC FROM Andrey Zvoznikov/ARDEA/ CATERS NEWS

PICTURED: SNOWY OWL

PIC FROM Andrey Zvoznikov/ARDEA/ CATERS NEWS

PICTURED: GUINEA PIG EYE CLOSE-UP

PIC FROM Brian Bevan/ARDEA/ CATERS NEWS

PICTURED: Red-eyed tree frog

PIC FROM Steve Downer/ARDEA/ CATERS NEWS

PICTURED: Close up of eye and heat sensory pits of a Python

PIC FROM John Daniels/ARDEA/ CATERS NEWS

PICTURED: Horse eye

PIC FROM M. Watson/ARDEA/ CATERS NEWS

PICTURED: Asian / Indian Elephant

PIC FROM Andrey Zvoznikov/ARDEA/ CATERS NEWS

PICTURED: BLUE ROCK PIGEON