Here's why:
* Different species: Miniature Schnauzers and Golden Retrievers are different species. They can't interbreed and produce offspring.
* Biological incompatibility: Their reproductive systems are not compatible. Even if they were to attempt mating, fertilization would not occur.
This is similar to humans and other animals - we can't interbreed with them!
If you're curious about the offspring of a specific dog breed, it's best to consult a veterinarian or a reputable breeder.