His distraught wife Ann, 76, described Peter, originally from North London, who volunteered for the Dogs Trust, as a 'lovely, gentle husband, dad and grandfather'.
Palmer, of Bawdeswell, Norfolk, denies a single charge of murder.
Father-of-two Mr Wrighton, whose body was found by officers at 11.20am, had suffered multiple severe stab wounds to the neck and throat as a result of the alleged attack.
His dogs, Dylan and Gemma, were found near his body which was so badly injured, it was initially thought he had been attacked by an animal.
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