The cross-bred German shepherd has been retired from his post by his masters at North Wales Police for failing to tackle a single criminal during his three-year career with the Dog Handlers' Unit in Wrexham.
Handler PC Graham Fradsham feared Jake's gentle nature could have put him and his colleagues at risk from attackers.
"As he matured he decided he liked people and he was too nice for his own good," he said. "One of the dog's main roles is to defend its handler, if they've lost the will to bite they won't defend us."
The three-and-a-half year old has now been pensioned off to live in a family home in Southsea, near Wrexham.
PC Fradsham added: "It was hard to say goodbye but I have spoken to his new family and he's happy now as a family pet."
Jake was one of 12 dogs working in the dog unit throughout the region. During the working day, they are housed at local police stations but at the end of the shift the dogs go home with their handlers.
The animals, which arrive with the force between 12 and 24-months-old, are put through a rigorous 13-week training process. Thereafter, they are re-assessed every year to ensure they still make the grade. Jake passed the initial course but Graham said he noticed the dog was not improving.
"He failed the course a month ago because he didn't want to bite anything," he said. "When we first put him through the course he was fine but as he matured he decided everyone was his friend. I had an inkling that he was going soft on me so I wasn't surprised that he failed."
The police dogs have been trained to help officers track criminals, search open areas for hidden suspects, bite, defend their handler and basic obedience and agility.
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