65-year-old David Atherton shocked to discover the black and white reptile . The man was walking his dog in a field near his home when he spotted what looked like an alligator on top of a tree. His sister is so scared of snakes she had 'heart problems ' when she heard . Influx of snakes is common in April when weather is warmer , RSPCA says .
65-year-old David Atherton shocked to discover the black and white reptile . He placed it inside a plastic food recycling box while waiting for the police . His sister is so scared of snakes she had 'heart problems ' when she heard . Influx of snakes is common in April when weather is warmer , RSPCA says .