My smart dog

I have a mixed breed dog and he is a little over a year. When he wants to play I will tell him to go get a certain toy and I have to say what room it is in and then he will go get it. If you don't say what room he will look behind him and then in the dinning room and come back with a puzzled look on his face. He is great! He knows the sounds of the bus so when he hears one he will listen for the kids and when he hears them he will either go to the door or stand on the porch and wait for them. I thought he would run off the porch, down the street to greet them. Nope, he waits right on the porch like a good boy. We really lucked out when we got him!!