String dogs are mixed-race dogs.
A string dog is a dog that is a cross between two or more dogs of different breeds. It does not belong to any breed of dog, especially a string dog whose parents' breed characteristics are not obvious.
Strings of dogs are not as pure as breeds of dogs. Crossbreeding of different breeds of dogs will affect the quality of their offspring, but generally, stringing dogs are very smart, and a small number of stringing dogs are also very good-looking.
When raising a string dog, you don't need to care too much about its pedigree, because although it doesn't have a clear pedigree, it is generally easy to raise, and its constitution is also very good, and it is rare to get sick.