I think Interesting dreams....

Twitches can be caused by muscle or nervous system disorders and seizures.

But ya If your dog is simply paddling their legs and making noises of excitement they're probably having a good dream. But if your dog is whining, crying or growling, then they may be having a bad dream, in which they feel threatened or anxious.

Hmm interesting! Now I wonder do our furbabies dream about theirs hoomans too like we do about them? 😄

Interesting😅

All dogs dream, and some manifest dreaming with twitching, paddling, or kicks of their legs. These movements are often brief (lasting less than 30 seconds) and intermittent. Seizing dogs’ limbs, on the other hand, tend to be rigid and stiffer, with more violent movement

Dogs experiencing a seizure cannot be easily woken, while dreaming dogs can. Dogs having a seizure often are disoriented afterwards and may drool and pant. Seizing dogs may urinate or defecate on themselves, while dreaming dogs usually do not

If you feel the need to wake a sleeping dog because you are concerned by his movements, it is better to call his name loudly or make a noise, such as dropping an object on the floor, and see if he responds. If he wakens, he was probably dreaming, and then you can gently reassure him if he is startled.

Also, if your dog experiences a seizure and comes out of it, but has another seizure within 24 hours (or multiple seizures), these are called cluster seizures. All seizures should be reason to contact a veterinarian right away, but cluster seizures require emergency action.

Seizures are extreme cases, they last longer too.