Several years ago there was an article in the Daily Sun about a man who would just suddenly collapse while walking, with no warning. It was like a mystery disease of some sort.
It turned out that this man rescued a stray dog and one day that dog came over to him and started pawing at him. A few seconds later, he collapsed. The man soon realized that the dog was giving him a warning. And the dog had no formal training, as far as anyone knows. He was just a good dog.
That's a great story because the man did a good deed by giving the dog a home and then the dog was able to do something in return.
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