Ray Phillips and his dog Bella raised £300 to go towards a sensory room at Studlands Rise First School in Royston.
A cheque was presented to headteacher Mrs Wilby on Friday, July 12, and the sensory room is being devised by teacher Mrs Pope.
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Bella's strongest sense is her nose, and she raises money by digging out golf balls from the most inaccessible areas of Therfield Heath, surrounding the golf course.
She and Ray are also saving the environment from hundreds of decaying golf balls. No balls are taken from the field of play and golfers donate money in exchange for getting the balls back.
The duo have previously raised money for Essex and Herts Air Ambulance, Wood Green Animal Charity and Addenbrooke's Hospital.
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