The Papillion toy dog breed is considered Smartest because of their keen sense of observation.
Generally, the Poodle toy dog breed is trained to perform complex tasks.
Border Terrier is the Smartest toy dog breed because they are capable of learning various tricks.
Shetland Sheepdogs' high trainability makes them quick learners and problem solvers.
Yorkshire Terrier is small in size but they are sharp and quick graspers.
Cavalier King is very Smart because they easily understand human emotions.
Generally, Italian Greyhounds are known for their adaptability and they are very intelligent.
It is considered as eighth Smartest toy dog breed because it can be trained for various works.