A sooner dog is not a specific breed of dog, but rather a term used to describe a mongrel or any dog that would "rather feed than fight". The term "sooner" can also be used to describe a lazy, good-for-nothing person. According to DARE, the term "sooner" ironically plays on the opposite meaning of the word, which is a quick or clever person.

The appearance of a sooner dog can vary widely, as it is not a specific breed of dog. An example of a mixed breed dog that could be considered a sooner dog is the Bogle dog, which is a mix of a Beagle and a Boxer. Another mixed breed dog that could be considered a sooner dog is the Yorkie Poo, which is a mix of a Yorkshire Terrier and a Poodle.

In summary, a sooner dog is a term used to describe a mongrel or mixed breed dog that is not a specific breed. It can also be used to describe a lazy, good-for-nothing person.