A DOG walker has described the moment he photographed what he says was a 'big cat,' which he believes was a lynx.

Martin Burford, originally from Worcester, says he was walking with his dog on the Worcestershire and Gloucestershire border at around 6pm last night when he spotted the cat among the grass.

The 53-year-old described how his dog sat bolt upright when he became aware of what he says was a lynx and that he was able to zoom in and take a photo of the animal 'before it bolted'.

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"I'm sure it was a lynx. It looked in my direction. It was not a domestic cat - 100 per cent. It was a big cat. The dog was going mad trying to get to it," he said.

A lynx has a short tail, characteristic tufts of black hair on the tips of their ears, large, padded paws for walking on snow and long whiskers on the face.

Under their neck, they have a ruff, which has black bars resembling a bow tie, although this is often not visible.

There are four species - the Canada lynx, Iberian lynx, Eurasian lynx and the bobcat.