Is It Important That a Puppy Is Purebred?
Generally speaking, it is only important for your lab to be purebred when you want to win award shows. In this case, any deviation from the breed standard will lead to disqualification. Other than that, if you want a pet that has all the behavioral traits labradors are known for - friendliness, loyalty, high energy - you can get the same traits in puppies of a mixed lineage.