Do you sleep better/longer after a good workout and why?

“The harder we work out, the more driven we are by this chemical to sleep.” Working out also helps you maintain your circadian rhythm (that is, your body's internal clock), Winter says. “Exercise helps your body understand the schedule it's on; and morning exercise primes your body to sleep better at night.”

As long as it was one lick and the dog is a bigger dog, it should be fine. watch it carefully for a few days.