[header] How to teach a dog to smile [title] Pay attention to time. [step] Teaching a dog to smile is similar to teaching him any habit, so you'll need to know the basic tenets of dog training. Timing makes a huge difference when it comes to successfully training a dog. 
[substeps] A dog must be rewarded the instant he obeys a command. Many people reward their dogs with a small treat or positive verbal praise, such as " yes! " or " good job! " some people invest in a clicker, a small mechanical device that makes a clicking noise when a button is pushed.