My name is ***** ***** I’ve been involved professionally with dogs in the health and behavioral fields for over 18 years. It will be my pleasure to work with you today.
Your dog may have experienced a seizure even though there was no drooling or shaking. Seizures
can manifest in many different ways. You can read about seizures and the different kinds here:
A dog may also "faint" in which they fall to the ground usually on their side, stare straight ahead and seem paralyzed which indicates a heart problem.. This is called syncope and can be read about here:
I would have your dog seen by your vet as soon as possible and limit your dog's activity until he can be seen in case it is heart related and not seizure related. If you have a video camera, and this happens again, taping the behavior
will help your vet determine the cause.
I would suggest having him checked for a heart condition at this point. I hope this information is helpful to you. If you need more information or clarification, please reply and I'll get back to you as soon as possible. If you are satisfied, please take the opportunity to rate.