He watched with interest as a dog sniffed around the car.
One day, during a particularly long pause, a dog came over and sniffed at her hands.
Let the dog decide whether it wants to come up and sniff your hand.
One night the boy spoke as the dogs sniffed at the steps below.
She moved around the room like a stray dog sniffing.
The dogs were sniffing at the other side of the barrier now.
The dogs have sniffed a half mile in every direction.
He sent a drawing of a dog sniffing a flower.