The prototype of the search and rescue dog "Ding Dong" in the movie "A Loyal Dog" is a meritorious search and rescue dog from the Search and Rescue Dog Station of the Special Service Brigade of the Chengdu Fire Rescue Detachment. It has participated in many rescue operations, especially in the Ya'an earthquake rescue, where it persisted in search and rescue for 10 hours and successfully found a pregnant expectant mother.

The real "Ding Dang" is currently 10 years old and is part of the third batch of training for the search and rescue dog station of the Chengdu Fire Rescue Detachment Special Service Brigade. A search and rescue dog who is the longest among his siblings.