my new 9 week old puppy just came home with me on saturday. when he takes naps he always makes suckling noises, so i assume he is dreaming about his mom. well just like 5 minutes ago he was making those suckling noises but them he started whining and started, like, twitching. i started petting him cuz it was kinda scaring me and he jumped up and barked/yelped. boy, did that scare me!!!

has this ever happened to anyones dog? was he just having a nightmare?