I worked as a postman for a short time, but I am afraid of d

I worked as a postman for a short time, but I am afraid of dogs,
and I had a lot of trouble. one day i tried to deliver a postcard to a big house I got off my bicycle and at once a large dog ran towards the gate, it made a lot of noise, and in the end I dropped the card in the garden, the dog picked it up immediately and carried it into the house.
我想知道这个短文来自哪里? 谢谢了