How do you know if your dog is having a bad dream?
- Tense jaw.
- Twitching whiskers.
- Sweaty paws.
What do dogs dream about when they twitch?
It is in the SWS stage that a dog breathes heavily while he is sleeping. Animal experts theorize that dogs dream during the REM stage and act on their dreams by twitching or moving all four paws as if they were chasing a rabbit.