Dogs, like humans, experience different stages of sleep, including REM sleep where they dream, which can lead to whimpering or other sounds.
Common reasons for dogs to whimper in their sleep include stress from their day, lack of sleep, remembering things they learned, their feeding schedule, pain, or even medical issues.
If your dog is regularly whimpering during sleep, it's important to take them to the vet to rule out any medical problems.
While occasional whimpering is normal, if it happens often or your dog seems distressed, you should talk to the vet to get some advice.
