@showtime_bullies: Ever wonder why puppies twitch in their sleep, almost like they’re vibrating? 🐶 It’s called REM short for Rapid Eye Movement. In puppies, REM sleep is when their brains and nervous systems develop the fastest. This handsome little guy is 12 days old today. ❤️ #AmericanBullyPuppies #FollowUs #TikTokPuppy #DogTalk #ForYouPage