What breed is a mixed-breed dog (mutt)?

A mixed-breed dog refers to a non-purebred dog whose parents and ancestors may come from different breeds, so the offspring carries genes from various breeds and shows mixed traits that may look less coordinated, giving it a plainer appearance. Mixed breeds are generally lively and smart, relatively independent, but very loyal to their owners.

They are also less prone to certain hereditary diseases of pure breeds, so they tend to have stronger constitutions and are easier and simpler to keep.