My first reason why I think dogs are smart is you can teach them tricks.For an example when I first started to train my dog I decided he would be a good little stunt dog so I got some old but sturdy materials and made a hoop, a pole, and a stunt an I taught him to climb,jump,and flip.
My second reason why I think dogs are smart is you can teach them commands quickly. For an example before I decided my dog was going to be good a stunt dog I needed to to teach him some commands for safety so I taught him to:roll,sit,play dead, and speak and he learned very fast.
My third reason why I think dogs are smart is you can train them to do special jobs. For an example when someone is blind you can train dogs to be guide dogs or if someone has a disability you can train some dogs to pickup stuff for them or put stuff done.
That's why I think dogs are smart.tell me your reasons why.the best reason dog are smart is they can learn very quickly how to do things.