It is the Labador Retriver. I'm pretty sure.
the welsh springer spaniel is the most uncommon breed in the us
There is not a specific dog breed that is smarter than any other dog breed in the world than there is in the USA, but the smartest dog breed are poodles.
The US.
We can't answer your question, because you do not give us a breed of dog. Please restate your question
grey hound
grey hound
bulldog
500,000 to 1,000,000
yorkie
Labrador Retriever
Boston terrier
No, a dog that is a toy breed has to reproduce with a dog of the same breed. This means that they will produce the same breed of dog. And not a dog out of the toy column.