Which dog breed is the smartest: Poodle, German SHepherd, or Shetland Sheepdog?

Poodle is the smartest. That is why they were used in the creation of so many AKC breeds. Poodle has always been one of the top 2 smartest dogs ever. The poodle and the Border Collie. Although. I have a Border Collie that lives next door to us and one of those white coolers blew in their yard and he spent half the day barking at it. I think that is dumb.