Adrienne Farricelli

The behavior of dogs "selectively hearing" when they are sniffing shouldn't surprise us. It's not like they are deliberately deciding to ignore us. It's just that with one third of the dog's brain dedicated to the sense of smelling, he may have a hard time concentrating, explains dog trainer Kyra Sundance in the book "The Dog Rules: 14 Secrets to Developing the Dog YOU Want." If you are in the mood for training, it might be therefore in your best interest to just wait it out a bit and ask him to perform a behavior a few seconds later once he's done so to set him up for success.