* Scientific classification is for distinct species. Dogs are all *Canis lupus familiaris*, so the scientific name doesn't differentiate between breeds or mixes.
* Breed mixes are not recognized as distinct breeds. While we might call them "Labradoodles" or "Goldendoodles," these names are informal and not scientifically recognized.
* Genetics are complex. The genetic makeup of a mix can vary greatly, so even two dogs with the same parent breeds might be quite different genetically.
So, while there's no scientific name for a Black Lab-Golden Retriever mix, you can call them by fun names like "Blackador" or "Golden Lab" depending on their appearance and personality.