Full story:
A farmer had a pet dog who despite being well cared for was envious of the freedom enjoyed by the wild dogs outside his farm. They often invited him to join their pack but he refused, saying that he had a duty towards his master. One day, after another encounter with the wild dogs, curiosity got the better of him and he decided to join them to see how life would be like in the wild. Well, it was really fun at first! They ran around freely without a care in the world, doing whatever they wanted, even raiding farms and killing the livestock there for food. One day, he ran with the pack and somehow ended up outside his former home. Seeing many chickens there, the greedy dog pack decided to raid the farm and carry away as many chickens as they could. Although feeling guilty, this dog wanted to prove himself to the pack and joined in the raid on his former master's farm. As the dogs ran in to attack the chickens, there was a sudden burst of gunfire and this dog was hit by one of the shots. As he lay critically injured and dying on the ground, he saw his former master walking towards him. "Why... oh why did you shoot me??", he cried. "Didn't you know it was me???" Looking down at the dirty and unkempt dog, the farmer said: "Sorry boy, but I just didn't recognise you"
Moral of the story: If we succumb to peer pressure and the temptations of the world, we may end up suffering a similar fate — being destroyed at Armageddon because God no longer recognises us
Having being in the audience and personally hearing this story being related from the platform on several notable occasions (assemblies & conventions), I can indeed verify the authenticity of this illustration being used in JW land. However, it is yet to be proved that it indeed came from the mouth of one of the GB members themselves
I hope this helps to clarify things a bit