The answer is yes, dogs do dream while they sleep. An MIT study found that rats dream about the activities they performed earlier in the day.
Structurally, dog brains are very similar to human brains, says Gary Richter, DVM, a veterinary health expert with Rover.
You might like to think your dog is dreaming about their owner, and you might be right.
Some common signs of a dog dreaming include twitching, quivering, murmuring, barking, sleepwalking, or running.
The size of a dog actually plays a part in how dogs dream, says Dr. Richter. Small dogs and puppies sleeping dream very fast and more often.
Just like humans, dogs can also have nightmares. Their nightmares might be about a traumatic event they experienced or a fear they have.