Rapid Eye Movement (REM) sleep is a sign of brain development in puppies! Find out when Schnauzer puppies first experience it. Comment and subscribe for more puppy trivia! Setterpedia.com #Schnauzer #PuppySleep #DogDevelopment #DogTrivia #DogDevelopment #dogfacts #PuppyMilestones #Setterpedia #VetAdvice animallovers CanineWellness dog dogtrivia healthypuppies INU petcare puppysleep Schnauzer スタンダード・シュナウザー